01 -
Preheat the oven to 350 degrees F (175 degrees C).
02 -
Spray a rimmed 18 by 13-inch baking sheet with non-stick cooking spray to prevent sticking.
03 -
In a medium mixing bowl, whisk together all sauce ingredients: soy sauce, ketchup, pineapple juice concentrate, brown sugar, rice vinegar, cornstarch, worcestershire sauce, minced garlic, minced ginger, and black pepper until well combined and smooth.
04 -
Place the diced green and red bell peppers, red onion chunks, and chicken breast cubes on the prepared baking sheet, spreading them out in a single layer.
05 -
Pour the prepared sauce over the chicken and vegetables on the baking sheet. Toss everything together to ensure all pieces are evenly coated with the sauce.
06 -
Place the baking sheet in the preheated oven and cook for 10 minutes.
07 -
After the initial 10 minutes, remove the baking sheet from the oven and toss the chicken and vegetables to ensure even cooking. Add the fresh pineapple chunks, distributing them evenly throughout the mixture.
08 -
Return the baking sheet to the oven and continue cooking for an additional 7-10 minutes, or until the chicken is completely cooked through and reaches an internal temperature of 165°F (74°C).
09 -
Remove the sheet pan from the oven and toss everything once more to coat with the thickened sauce. If using cilantro, sprinkle it over the top. Serve warm, optionally over coconut rice.