Preheat your air fryer to 400 degrees for 5 minutes.
Add the chicken breast pieces, BBQ seasoning, and avocado oil to a medium mixing bowl. Stir to combine and spread the seasonings evening.5
Lace the vegetables and chicken pieces onto the skewers. I rotate red onions, chicken, and red peppers until I have about 3 pieces of chicken on the skewer. Avoid stuffing them since it makes the chicken harder to cook. I use about 3 chicken bites per skewer.
Add the skewers to your air fryer basket in a single layer. You may need to do this in two batches
Air Fry at 400 degrees for 6 minutes.
Use a basting brush to coat both sides of the chicken kabobs with BBQ sauce.
Air fry at 400 degrees for 2-4 minutes to cook them through.
Repeat steps 4-7 for a second batch if needed.
Allow the meat to rest for 5 minutes before enjoying them.