Follow these easy steps to create your Brown Sugar Pineapple Chicken:

1. Prepare Chicken: Start by trimming any excess fat from the chicken breasts. Pat them dry with paper towels and set aside.
2. Make Marinade: In a bowl, whisk together brown sugar, soy sauce, ketchup, olive oil, minced garlic, ground ginger, black pepper, and red pepper flakes (if using).
3. Marinate Chicken: Place the chicken breasts in a resealable plastic bag or a shallow dish. Pour the marinade over the chicken, ensuring it is fully coated. Seal the bag or cover the dish and refrigerate for at least 30 minutes (or up to 4 hours for more flavor).
4. Preheat Oven: Preheat your oven to 375°F (190°C).
5. Prepare Baking Dish: Grease a baking dish with a little olive oil to prevent sticking.
6. Add Pineapple: After marinating, remove the chicken from the refrigerator. Place the chicken in the prepared baking dish. Scatter the pineapple chunks around the chicken, allowing them to soak up the delicious marinade.
7. Bake Chicken: Pour any remaining marinade over the chicken and pineapple. Bake in the preheated oven for 25-30 minutes or until the chicken reaches an internal temperature of 165°F (74°C).
8. Broil for Finish: For an extra caramelized touch, switch the oven to broil and cook for an additional 2-3 minutes, watching closely to prevent burning.
9. Rest Chicken: Once cooked, remove the baking dish from the oven. Let the chicken rest for 5 minutes to allow the juices to redistribute.
10. Garnish: Before serving, sprinkle fresh cilantro or sliced green onions on top for added color and flavor.

These simple steps will guide you in preparing this incredible dish with ease!