01 - Preheat oven to 400°F or air fryer to 375°F. Line a baking sheet with parchment paper if using oven method.
02 - Lay flour tortillas on a clean work surface. Spread 2-3 tablespoons of pizza sauce in the center of each tortilla, leaving a 1-inch border around edges.
03 - Distribute mozzarella cheese evenly among tortillas. Top with pepperoni (if using), bell peppers, black olives, red onion, oregano, and garlic powder.
04 - Fold in the left and right edges of each tortilla toward the center. Starting from the bottom edge, roll up tightly burrito-style to completely enclose the filling.
05 - Lightly brush or spray the outside of each burrito with olive oil on all sides to promote even browning and crisping.
06 - Oven method: Place burritos seam-side down on prepared baking sheet. Bake for 18-20 minutes until golden brown and crispy. Air fryer method: Place in air fryer basket and cook for 8-10 minutes, flipping halfway through, until crisp and browned.
07 - Remove from heat and let cool for 2-3 minutes. Sprinkle with grated Parmesan and fresh basil if desired. Serve immediately with extra pizza sauce or ranch dressing for dipping.