Delicious Low Carb Chicken Fajita Soup Recipe: Perfect for Keto Dieters

Indulge in the Warmth of Low Carb Chicken Fajita Soup

As the seasons change and the air carries a cooler whisper, there’s nothing quite as comforting as a bowl of hearty soup. For those on a keto diet, finding a soup that satisfies the craving without the carbs can be a challenge. Enter the Low Carb Chicken Fajita Soup, a dish that encapsulates the essence of a classic Mexican fajita in a creamy, flavorful broth.

This recipe isn’t just a win for your tastebuds; it’s a nutritional powerhouse that aligns perfectly with your keto goals. With succulent chicken, vibrant bell peppers, and a rich, creamy base, this soup is a testament to the fact that low carb eating doesn’t have to be bland or boring. It’s a perfect keto diet recipe that will keep you warm, full, and on track.

Low Carb Chicken Fajita Soup

The Story Behind the Soup

My journey with this Low Carb Chicken Fajita Soup began as an experiment to transform my favorite fajita flavors into a keto-friendly dish that could be enjoyed year-round. The result was a soup that not only tastes amazing but also provides the nutritional benefits that those on a ketogenic diet seek.

One of the key ingredients in this soup is the boneless, skinless chicken breasts, a lean protein source that’s perfect for a high-fat, low-carb diet. Chicken is a versatile protein that absorbs the bold flavors of the fajita seasoning, making each spoonful a delightful experience.

The bell peppers add not just a pop of color but also a wealth of nutrients, including vitamin C and various antioxidants. Their natural sweetness complements the heat from the spices, creating a balanced profile that’s both nutritious and keto-compliant.

Heavy cream brings a luxurious texture to the soup, contributing to the fat content that’s essential for keto dieters. It’s the secret to achieving the creamy consistency that makes this soup so indulgent without the added carbs.

The combination of cumin, chili powder, and paprika is what gives this soup its fajita signature. These spices are not only low in carbs but also boast potential health benefits, such as anti-inflammatory properties and metabolism support.

Ingredients for Low Carb Chicken Fajita Soup

Mastering the Method

Creating the perfect Low Carb Chicken Fajita Soup is about more than just following a recipe; it’s about embracing the art of cooking. The first step, browning the chicken, is crucial. It’s not just about cooking the meat; it’s about building a foundation of flavor. Make sure your pot is hot enough to sear the chicken, locking in juices and creating a golden crust.

When sautéing the onions and bell peppers, patience is key. Allow them to soften and caramelize slightly. This not only enhances their natural sweetness but also infuses the soup with a deeper flavor profile.

As you stir in the spices, let them toast for a minute. This simple action releases their essential oils, which heightens their flavors and permeates the entire dish. When you pour in the broth and tomatoes, scrape the bottom of the pot to deglaze it, ensuring that every bit of seasoning contributes to the soup’s complex taste.

Shredding the chicken is more than a textural preference; it allows each strand to soak up the broth and spices, ensuring that the chicken is as flavorful as the liquid it’s bathed in. When you add the heavy cream, do so gently, and let it warm through without boiling, to prevent curdling and maintain a smooth consistency.

Cooking Low Carb Chicken Fajita Soup

Variation: Dairy-Free Delight

For those who are dairy-sensitive or simply prefer a lighter version, replace the heavy cream with full-fat coconut milk. This not only maintains the creamy texture but also adds a subtle, exotic flavor that pairs beautifully with the spices.

Variation: Veggie-Packed Powerhouse

Boost the nutritional value by adding a variety of keto-friendly vegetables like spinach, zucchini, or mushrooms. These not only add volume and fiber but also allow you to customize the soup to your taste preferences.

Variation: Spicy Adventure

If you’re a fan of heat, don’t hold back on the jalapeño. Alternatively, add a dash of cayenne pepper or a few drops of your favorite hot sauce to turn up the temperature and add an extra layer of flavor.

Substitutions for Success

While the original recipe is designed to be keto-friendly, there are always options to tailor it to your needs or pantry availability. If you don’t have chicken breasts, thighs can be a juicier, more flavorful alternative. They’re also higher in fat, which can be beneficial for keto dieters.

Can’t find diced tomatoes with green chilis? No problem. Use regular diced tomatoes and add a can of diced green chilis separately. This allows you to control the heat level and customize the soup to your liking.

For those avoiding dairy, we’ve mentioned coconut milk as a great substitute for heavy cream. But if you’re looking for a nuttier flavor, almond milk, particularly the unsweetened and unflavored variety, can also do the trick.

Frequently Asked Questions

Q: Can I make this soup in a slow cooker?

A: Absolutely! Brown the chicken first, then add all the ingredients except the heavy cream to the slow cooker. Cook on low for 6-8 hours, then stir in the cream just before serving.

Q: How can I thicken the soup without adding carbs?

A: A simple xanthan gum slurry can act as a thickener without adding significant carbs. Start with a small amount and increase as needed.

Q: Is this soup freezer-friendly?

A: Yes, it freezes well. Cool the soup completely, omit the garnishes, and store in airtight containers. Thaw in the refrigerator overnight and reheat gently.

Q: Can I use a different type of cheese for garnish?

A: Of course! While cheddar is suggested, feel free to use Monterey Jack, Pepper Jack, or even a Mexican cheese blend for a different twist.

Q: How can I add more fiber to this soup?

A: Consider adding low-carb vegetables like chopped kale or diced avocado after the soup is cooked for added fiber and nutrients.

Low Carb Chicken Fajita Soup

This Low Carb Chicken Fajita Soup combines the zesty flavors of fajitas with the comfort of a hearty soup, perfect for anyone following a ketogenic diet. Packed with succulent chicken, colorful bell peppers, and a rich, creamy base, this soup is not only delicious but also satisfying and easy to make.
No ratings yet
Prep Time 15 minutes
Cook Time 25 minutes
Total Time 40 minutes
Course Dinner
Cuisine Mexican
Servings 6 servings
Calories 345 kcal


  • Large pot
  • Measuring cups and spoons
  • Knife
  • Cutting board
  • Two forks (for shredding chicken)


  • 1.5 pounds boneless, skinless chicken breasts
  • 2 tablespoons olive oil
  • 1 medium onion, diced about 150g
  • 3 bell peppers, thinly sliced mix of red, yellow, and green, approximately 400g total
  • 4 cloves garlic, minced
  • 1 jalapeño, seeded and diced optional for extra heat
  • 2 teaspoons ground cumin
  • 1 teaspoon chili powder
  • 1 teaspoon paprika
  • ½ teaspoon dried oregano
  • 4 cups chicken broth, low sodium
  • 1 cup heavy cream
  • 1 can diced tomatoes with green chilis, drained 10 ounces or 280g
  • Salt and pepper to taste
  • ½ cup shredded cheddar cheese for garnish optional
  • Fresh cilantro for garnish optional


  • Heat the olive oil in a large pot over medium heat. Add the chicken breasts and cook until browned on both sides and no longer pink in the center, about 5-7 minutes per side. Remove the chicken from the pot and set aside.
  • In the same pot, add the diced onions and sauté until translucent, about 3 minutes. Add the sliced bell peppers and cook for an additional 5 minutes, or until they start to soften.
  • Stir in the minced garlic, jalapeño (if using), cumin, chili powder, paprika, and oregano. Cook for 1 minute until the spices are fragrant.
  • Pour in the chicken broth and diced tomatoes with green chilis. Bring the mixture to a simmer.
  • While the soup is simmering, shred the cooked chicken breasts with two forks.
  • Add the shredded chicken back into the pot. Simmer the soup for 10 minutes, allowing the flavors to meld together.
  • Reduce the heat to low and stir in the heavy cream until well combined. Season with salt and pepper to taste.
  • Serve hot, garnished with shredded cheddar cheese and fresh cilantro if desired.


For a dairy-free version, substitute heavy cream with full-fat coconut milk.
Adjust the level of heat by adding more or less jalapeño, or by using a milder variety of diced tomatoes with chilis.
The soup can be stored in an airtight container in the refrigerator for up to 3 days or frozen for up to 1 month.
Nutritional information is provided as an estimate and will vary based on the brands of ingredients used.


Calories: 345kcalCarbohydrates: 9gProtein: 25gFat: 22gFiber: 3gNet Carbs: 6g
Keyword Chicken Fajita Soup, Gluten-Free, Keto, ketogenic diet, Low-Carb, Mexican Soup
Tried this recipe?Let us know how it was!