First, combine the marinade ingredients in a bowl.
Add the chicken into one bowl and the broccoli and onion to another.
Divide the marinade between the two bowls, stirring to coat the ingredients evenly.
Air Fry:
Preheat the air fryer to 380 degrees F.
Add just the chicken to the air fryer basket in one layer and air fry for 10 minutes.
Next, stir in the broccoli and onions with the chicken, and air fry for 8-11 minutes, or until the chicken is cooked through. Stir halfway through cooking.