Preheat oven to 350 degrees
Cut biscuits in half, splitting one biscuit into two equal circles. Using your hands or a small rolling pin, flatten each biscuit half.
In a small mixing bowl, mix together marinara sauce, mozzarella and pepperoni.
Scoop about 1-½ tablespoons of the pizza mixture into the center of each flatten biscuit. Grad out and up the edges around the biscuit, pinching them together at the top until a ball is formed. Be sure all of the dough is pinched and connected around the pizza filling.
Using a 12-cup muffin tin, place each bomb inside the muffin tin, pinched side down. Do this until the entire muffin tin is filled with the first 12 bombs.
In a small mixing bowl, combine the melted butter and Italian seasoning.
Using a rubber brush, brush the butter mixture over the tops of each bomb, coating them heavily.
Top each bomb with a large pinch of parmesan cheese.
Place pizza bombs inside of the oven and cook for 12-14 minutes or until golden brown.
When done, allow bombs to cool on a cooling rack for a few minutes before serving.