In a bowl, whisk together soy sauce, honey, olive oil, minced garlic, grated ginger, sesame oil (if using), rice vinegar, black pepper, and chili flakes.
Marinate the Chicken:
Place the chicken thighs or drumsticks in a large resealable plastic bag or a shallow dish. Pour the marinade over the chicken, ensuring each piece is well coated. Seal the bag or cover the dish and refrigerate for at least 1 hour, or overnight for best results.
Preheat the Oven:
Preheat your oven to 375°F (190°C).
Bake the Chicken:
Arrange the marinated chicken pieces in a single layer in a baking dish. Pour any remaining marinade over the chicken.
Bake in the preheated oven for 35-40 minutes, or until the chicken is cooked through and the skin is crispy and golden brown. Baste the chicken with the marinade a couple of times during baking for extra flavor and moisture.
Finish and Serve:
Once the chicken is done, sprinkle with sesame seeds and sliced green onions.
Serve hot with steamed rice or your favorite side dish.
Enjoy your Honey Soy Chicken Bake!