Cut chicken into cubes then place in a bowl and season with salt, pepper, garlic powder, and cornstarch
Transfer to air fryer rack, spray with avocado oil and then Air fry for 20 minutes at 400°F. Shake every 5 mins
In a pan on medium heat cook the pepper, onion, and garlic for 3-4 minutes until the vegetables soften
Then add the sauce and cook for 3-4 more minutes until the sauce thickens
Add crispy chicken to the sauce, garnish with chilis and green onions (optional) and enjoy over some rice