Preheat the air fryer to 375°F (190°C) for 5 minutes.
- Season chicken thighs with salt and pepper on both sides.
- In a small bowl, whisk together honey, minced garlic, soy sauce, and vinegar.
- Lightly brush chicken thighs with olive oil.
- Place chicken thighs skin-side down in the air fryer basket in a single layer.
- Cook for 12 minutes, then flip the chicken.
- Brush the honey garlic sauce generously over the chicken.
- Cook for another 8-10 minutes until the chicken is cooked through (internal temperature 165°F/74°C) and skin is crispy.
- Brush with more sauce before serving.
- Garnish with chopped green onions and sesame seeds if desired.