Preheat oven to 400° and line a large baking sheet with parchment paper. In a medium, microwave-safe bowl, add mozzarella, almond flour, cream cheese, garlic powder, baking powder, and a large pinch of salt. Microwave on high until cheeses are melted, about 1 minute. Stir in egg.
Shape dough into a ½”-thick oval on baking sheet.
In a small bowl, mix melted butter with garlic, parsley, and Parmesan. Brush mixture over top of bread.
Bake until golden, 15 to 17 minutes. Slice and serve with marinara sauce for dipping.