Preheat the oven to 375 degrees Fahrenheit and prepare a baking dish by lining it with parchment paper and spraying with cooking spray.
Flatten each biscuit with a rolling pin into a 3-inch circle, using cooking spray to prevent sticking.
Spread about 1 teaspoon of pizza sauce onto each biscuit circle, leaving a 1/4-inch border around the edges.
Place 2-3 pepperoni slices and 2 cubes of mozzarella cheese in the center of each circle.
Fold the edges of the dough over the filling and pinch to seal completely.
Place the sealed dough balls seam-side-down in the prepared baking dish.
In a small bowl, whisk together the melted butter, Parmesan cheese, minced garlic, and Italian seasoning.
Brush the tops of the pizza bombs with the garlic butter mixture.
Bake for 15-18 minutes, until golden brown.
Remove from oven and immediately brush with remaining garlic butter.
Sprinkle generously with extra Parmesan cheese and optional chopped herbs.
Serve hot with extra pizza sauce for dipping.