Preheat your oven to 350 degrees F. The right temperature is crucial to ensure even cooking and perfect caramelization.
Spray a rimmed 18 by 13-inch baking sheet with non-stick cooking spray. This will prevent sticking and help achieve that lovely golden finish.
In a medium mixing bowl, whisk together the soy sauce, cornstarch, ketchup, pineapple juice concentrate, brown sugar, rice vinegar, worcestershire, minced garlic, ginger, and black pepper until smooth. This sauce is the key to the dish's fabulous flavor.
Place the diced green and red bell peppers, red onion, and chicken on the baking sheet. Make sure everything is spread out evenly for the best cooking results.
Pour the prepared sauce over the top and toss everything to coat evenly. You want every piece of chicken and veggie to get that delicious glaze.
Cook in the preheated oven for 10 minutes. This will give everything a head start in cooking.
After 10 minutes, remove the baking sheet from the oven and give everything a good toss. This ensures even cooking and flavor distribution.
Sprinkle in the fresh cubed pineapple and return the baking sheet to the oven. This will allow the pineapple to warm through and caramelize slightly.
Continue to cook until the chicken is cooked through, about 7 to 10 minutes longer. You can check for doneness by ensuring the internal temperature of the chicken reaches 165 degrees F.
Remove from the oven and toss everything once more to coat in the sauce. This final toss adds an extra layer of flavor.
Serve warm, over coconut rice if desired. It’s a delightful way to complement the tropical flavors.
