Preheat air fryer to 400°F (200°C) for 3 minutes
Slice chicken into even strips
Slice bell peppers and onion into similar sized strips
Toss chicken and vegetables with olive oil and all seasonings
Place in single layer in air fryer basket
Cook for 10 minutes then shake basket well
Cook another 10 minutes until chicken is cooked through and vegetables are caramelized
Check internal temperature of chicken reaches 165°F
Warm tortillas in air fryer at 350°F for 2 minutes
Assemble fajitas with chicken and vegetable mixture
Top with sour cream guacamole and fresh salsa
Garnish with fresh cilantro and serve with lime wedges