Preheat your air fryer to 375°F (190°C).
Lightly spray the bagel halves with olive oil spray.
Spread a tablespoon of pizza sauce onto the cut side of each bagel half.
Sprinkle mozzarella cheese evenly over the sauce.
Add pepperoni, bell peppers, and black olives as desired.
Sprinkle a pinch of Italian seasoning over each bagel half.
Place the prepared bagel halves in a single layer in the air fryer basket. Cook in batches if necessary.
Air fry for 5-7 minutes or until the cheese is melted and bubbly, and the edges of the bagels are crispy.
Carefully remove from the air fryer and let cool slightly before serving.