In a mixing bowl, whisk together honey, minced garlic, soy sauce, Dijon mustard, rice vinegar, grated ginger, salt, and pepper until well combined.
Place the chicken thighs in a resealable plastic bag or a shallow dish. Pour the marinade over the chicken, making sure each piece is well-coated. Seal the bag or cover the dish. Refrigerate for at least 30 minutes (or up to 2 hours for more flavor).
Preheat the oven to 400°F (200°C).
In a large oven-safe skillet, heat the sesame oil over medium-high heat. Remove the chicken from the marinade, allowing excess liquid to drip off. Reserve the marinade. Sear the chicken thighs skin-side down for about 5-7 minutes, or until golden brown. Flip the chicken and sear the other side for an additional 5 minutes.
Pour the reserved marinade over the chicken and transfer the skillet to the preheated oven. Bake for 25-30 minutes, or until the chicken is cooked through (internal temperature reaches 165°F/75°C) and the skin is caramelized.
Remove the skillet from the oven and let the chicken rest for a few minutes. Garnish with chopped green onions and a sprinkle of sesame seeds before serving.
Notes
Serve with steamed jasmine rice or stir-fried vegetables for a complete meal.