Set your oven to 400°F (200°C) to ensure it’s hot enough to caramelize the hoisin sauce and cook the chicken evenly.
In a mixing bowl, whisk together the hoisin sauce, soy sauce, sesame oil, and ground white pepper until smooth and well combined.
Add the chicken drumsticks to the bowl and toss them thoroughly in the marinade, ensuring each piece is evenly covered. For best results, let the chicken marinate for at least 20 minutes, or up to overnight in the fridge.
Place a wire rack on your baking sheet and arrange the drumsticks on top in a single layer. If you don’t have a wire rack, placing them directly on the sheet is fine, but turn them halfway through cooking.
Pop the chicken in the preheated oven and bake for 35-40 minutes, or until the internal temperature reaches 165°F (74°C) and the skin is nicely caramelized and crispy.
Let the chicken rest for 5 minutes before serving. This allows the juices to redistribute and makes for a juicier bite.