Preheat your oven to 350°F (175°C) and grease a Bundt pan with cooking spray or butter.

Combine olive oil, butter, onion flakes, garlic powder, Italian seasoning, red pepper flakes, and fresh parsley in a microwave-safe bowl and melt for 30 seconds.

Cut biscuit dough into quarters and pizza dough into 1.5-inch pieces, then place in a large bowl.

Pour the melted oil mixture over the dough pieces and toss until well-coated.

Layer a third of the pepperoni slices and half of the grated Parmesan cheese at the bottom of the Bundt pan.

Add half of the coated dough pieces over the first layer, followed by half of the remaining pepperoni, Parmesan cheese, and a drizzle of marinara sauce with half of the mozzarella.

Continue layering with the remaining dough pieces, pepperoni, Parmesan, marinara sauce, and mozzarella.

Bake for approximately 40 minutes until golden brown and cooked through.

Let it cool for 10 minutes, then invert onto a serving platter and enjoy with extra marinara sauce.