Preheat your oven to 425°F (220°C) and line a baking sheet with parchment paper.
In a mixing bowl, combine almond flour, coconut flour, xanthan gum, and baking powder. Mix well.
Add the shredded mozzarella and egg to the dry ingredients. Mix until a dough forms.
Place the dough between two sheets of parchment paper and roll out to your desired flatbread thickness.
Transfer the dough to the prepared baking sheet and remove the top sheet of parchment paper.
Bake the flatbread base for 8 minutes, or until the edges start to turn golden brown.
Remove the base from the oven and let it cool slightly. Spread the ricotta cheese evenly over the base.
Arrange the fig slices and prosciutto over the ricotta.
Return the flatbread to the oven and bake for an additional 4 minutes.
While the flatbread is baking, toss the arugula in olive oil, salt, and pepper.
Take the flatbread out of the oven, and immediately top with the seasoned arugula.
Drizzle with a sugar-free balsamic glaze if desired, slice, and serve warm.