Preheat your oven to 375°F (190°C) and grease a bundt pan with cooking spray or butter.
In a large mixing bowl, cut each biscuit into quarters.
Add the mozzarella cheese, pepperoni, Parmesan cheese, garlic powder, Italian seasoning, salt, and black pepper to the bowl. Toss until the biscuit pieces are well coated with the cheese and seasonings.
Drizzle the melted butter over the biscuit mixture and stir until everything is evenly combined.
Pour half of the pizza sauce into the bottom of the prepared bundt pan.
Layer half of the biscuit mixture into the pan, then pour the remaining pizza sauce over it.
Top with the remaining biscuit mixture, pressing down gently to pack it in.
Bake for 25-30 minutes or until the top is golden brown and the biscuits are cooked through.
Allow the monkey bread to cool in the pan for about 10 minutes before inverting it onto a serving plate.
Serve warm, and enjoy pulling apart the delicious pieces!