Preheat your oven to 375°F (190°C) to ensure even cooking.

Whisk together hoisin sauce, soy sauce, honey, oyster sauce, rice vinegar, minced garlic, Chinese five-spice powder, and sesame oil in a medium bowl until combined.

Place the chicken thighs in a resealable bag, pour half of the marinade over, seal, and refrigerate for at least 2 hours.

After marinating, let the chicken sit at room temperature for 30 minutes.

Arrange the marinated chicken thighs on a lined baking sheet in a single layer and discard the remaining marinade.

Bake in the preheated oven for 25-30 minutes until juices run clear and internal temperature reaches 165°F (74°C).

While chicken is baking, simmer the remaining marinade in a saucepan for about 10 minutes until thickened.

Baste the cooked chicken with the thickened marinade and broil for 2-3 minutes for caramelization.

Let the chicken rest for a few minutes before slicing and serve with your favorite sides.