In a medium-sized bowl, whisk together hoisin sauce, honey, soy sauce, five-spice powder, minced garlic, and fresh ginger until well combined. Add the chicken thighs, ensuring each piece is thoroughly coated in the delectable marinade. Cover the bowl with plastic wrap and let it marinate for at least 30 minutes at room temperature, or refrigerate for up to overnight.

Preheat your oven to 400°F (200°C) or prepare your grill for direct cooking.

Line a baking sheet with aluminum foil for easy cleanup, then place the marinated chicken thighs on the sheet. Bake in the preheated oven for 20-25 minutes, or until the chicken reaches an internal temperature of 165°F (74°C).

For added flavor, transfer the baked chicken thighs to the prepared grill. Grill each side for about 2 minutes.

Once finished, remove the chicken and let it rest for a few minutes. Slice and serve garnished with toasted sesame seeds and sliced green onions.