Arrange the frozen orange chicken pieces in a single layer in the air fryer basket. There's no need for oil spray. Keep the sauce aside for now.
Air fry at 400°F for 8 minutes. Shake the basket and flip the chicken pieces, then cook for an additional 2-4 minutes until the chicken is hot and crispy.
Heat the orange sauce in the microwave for 1 minute or on the stovetop over medium heat for 2-3 minutes. Toss the cooked chicken with the warmed sauce and serve.