Upside-Down One Pan Pizza Recipe - Tasty

Ingredients

• 2 tablespoons olive oil, divided
• 1 yellow onion, thinly sliced
• 1 green bell pepper, seeded and thinly sliced into rings
• nonstick cooking spray, for greasing
• ½ cup pepperoni, sliced
• ¾ cup grated parmesan cheese
• ¾ cup shredded mozzarella cheese
• 7 slices provolone cheese
• 2 cups pizza sauce
• all-purpose flour, for dusting
• 1 lb pizza dough