Heat olive oil in a skillet over high heat. Add diced onions, sliced bell peppers, and corn.
Cook until the onions are soft and the peppers start to char a little. Roughly 5 to 6 minutes. Remove and set aside.
In a separate bowl, combine the salsa, taco seasonings, and shredded cheese. Mix until the seasoning is mostly dissolved.
Preheat air fryer to 375 degrees F. Spray air fryer basket with non-stick spray.
Spray the tortillas on both sides with nonstick spray.
Divide the cheese mixture between three of the tortillas and spread into an even layer.
To the three tortillas, evenly add the pepper, onion, and corn mixture in a single layer.
Sprinkle with the chicken and the black beans.
Top with a second tortilla.
Place one quesadilla in air fryer and cook until golden brown and cheese has melted, roughly 3-5 minutes.
Remove from air fryer and allow to rest for a minute.
Cut into wedges and serve with your favorite toppings.