Preheat the oven to 400° F.
In the bowl of a stand mixer, combine the almond flour, oat fiber, baking powder, Italian seasoning, xanthan gum and salt.
In a glass bowl, combine the mozzarella and cream cheese.
Microwave for 1 minute. Stir, and continue to microwave in 30 second intervals until the cheese is melted.
Add the cheese and eggs to the bowl with the almond flour mixture and process until fully combined
Roll the dough out and cut into 8 squares. Place the squares in a bun pan (see photo), or use your hands to form them into pockets and place on a parchment lined baking sheet.
Bake for 10 to 12 minutes, until the dough starts to get golden and the bottoms firm up.
Place two meatballs in the center of each rectangle.
Top with marinara, mozzarella, and parmesan.
Bake for 7 minutes, until the cheese is bubbly and the crust is golden brown.