1. Preheat your oven to 350°F and prepare a bundt pan by spraying it with nonstick cooking spray.
2. Cut the refrigerated biscuits into quarters to ensure even cooking and easy pull-apart texture.
3. Combine biscuit pieces in a large mixing bowl with olive oil or melted butter.
4. Add pepperoni, mozzarella cheese, Parmesan (optional), Italian seasoning, garlic, optional onion powder, and kosher salt to the bowl. Mix thoroughly to coat all pieces evenly.
5. Layer the coated biscuit mixture evenly in the prepared bundt pan, avoiding overcrowding for balanced cooking.
6. Cover the bundt pan with foil to prevent excessive browning and place in the preheated oven.
7. Bake the bread for 30 minutes while covered with foil to keep it moist.
8. Remove the foil and bake for an additional 30 minutes, or until the bread is golden brown and cooked through.
9. Allow the Pull Apart Pizza Bread to cool in the bundt pan for 5 minutes after removing it from the oven.
10. Flip the bundt pan onto a serving plate to release the bread.
11. Serve warm with marinara sauce or your favorite pizza sauce for dipping.