Preheat air fryer to 400°F (200°C).
In a mixing bowl, toss chicken cubes with olive oil, salt, pepper, and garlic powder until surfaces are evenly coated.
Place chicken in the air fryer basket in a single layer, ensuring space between pieces for airflow.
Air fry for 12-15 minutes, shaking the basket at the 7-minute mark, until internal temperature reaches 165°F (74°C).
While chicken is cooking, combine honey, soy sauce, garlic, and ginger in a small saucepan over medium heat.
In a separate small container, whisk cornstarch and water to create a slurry.
Stir slurry into the saucepan and simmer for 2 minutes until the sauce thickens into a glaze.
Transfer cooked chicken to a clean bowl, pour the glaze over the pieces, and toss to coat.
Garnish with sesame seeds and serve immediately.