Combine sesame oil, soy sauce, honey, sriracha, and vinegar in a large bowl. Add chicken and stir to combine. Cover and refrigerate for at least 30 minutes.
Preheat an air fryer to 400 degrees F (200 degrees C). Drain marinade from the chicken.
Place chicken thighs skin-side up in the basket of the air fryer. Cook for 5 minutes. Flip and cook an additional 10 minutes.
Transfer chicken to a plate and let rest 5 minutes before serving. Garnish with green onion and sesame seeds.
