Preheat Oven: Preheat your oven to 375°F (190°C). Grease a muffin tin with olive oil or cooking spray.
Mix Dry Ingredients: In a large mixing bowl, combine the almond flour, baking powder, garlic powder, onion powder, and dried oregano.
Melt Cheese: In a microwave-safe bowl, melt the mozzarella cheese and cream cheese together for 30 seconds, then stir to combine until smooth.
Combine: Add the melted cheese mixture and egg to the dry ingredients. Stir until everything is well combined. If you want, fold in the chopped pepperoni.
Fill Muffin Tin: Spoon the mixture evenly into the greased muffin tin, filling each cup about 3/4 full.
Bake: Bake in the preheated oven for about 10-12 minutes or until the pizza puffs are golden and firm.
Serve: Let the puffs cool slightly, then serve with a side of marinara sauce for dipping (if desired).