Pat dry the chicken thighs and season with garlic powder, salt, and pepper.
Coat the chicken with olive oil and place in the air fryer basket.
Air fry at 380°F (195°C) for 15 minutes, flipping halfway through.
While the chicken cooks, whisk together gochujang, honey, sesame oil, soy sauce, and rice vinegar in a small bowl.
Once the chicken is cooked, brush or toss it with the sauce.
Optional: return the chicken to the air fryer for 1-2 minutes to caramelize the sauce.
Garnish with sesame seeds and green onions before serving.