Preheat your air fryer to 400°F for optimal crispiness.
Pat the chicken breast dry with a paper towel and cut into uniform 1-inch cubes.
Chop the broccoli, red bell pepper, and zucchini into bite-sized pieces.
In a large mixing bowl, combine the chicken cubes and vegetables with avocado oil, garlic powder, sea salt, and black pepper.
Transfer the mixture to the air fryer basket, ensuring it is spread in a single layer for even cooking.
Air fry for 12 to 15 minutes, shaking the basket halfway through, until the chicken is golden and the vegetables are tender-crisp.
Remove from the air fryer, drizzle with coconut aminos, and sprinkle with sesame seeds before serving.