Preparing Baked Huli Huli Chicken is easy when you follow these steps:

1. Prepare the Marinade: In a large bowl, mix together the soy sauce, brown sugar, ketchup, ginger, garlic, vegetable oil, rice vinegar, black pepper, and crushed red pepper flakes.
2. Marinate the Chicken: Add the chicken thighs or drumsticks to the marinade. Ensure they are well-coated. Cover and refrigerate for 1-2 hours.
3. Preheat the Oven: Preheat your oven to 375°F (190°C).
4. Arrange the Chicken: In a baking dish, arrange the marinated chicken pieces in a single layer, skin side up. Pour any remaining marinade over the top.
5. Bake the Chicken: Place the baking dish in the preheated oven. Bake for 30-35 minutes, or until the chicken is cooked through, reaching an internal temperature of 165°F (74°C).
6. Broil for Crispiness: For an extra crispy skin, switch the oven to broil for the last 2-3 minutes of cooking. Keep an eye on it to avoid burning!
7. Rest Before Serving: Remove the chicken from the oven and let it rest for a few minutes. This helps retain moisture.
8. Garnish and Serve: Optionally, garnish with chopped green onions and sesame seeds before serving.

These straightforward steps will lead you to the incredible flavors of Baked Huli Huli Chicken.