Sheet-Pan Sweet & Sour Chicken

Ingredients

• 1 large onion
• 2 green bell peppers
• 1 red bell pepper
• 2 chicken breasts, boneless and skinless
• 1 (20-ounce) can pineapple chunks, drained and juices reserved
• 2 tablespoons neutral-flavored oil
• 1/4 teaspoons garlic powder
• 1/2 teaspoons ground ginger
• salt, to taste
• pepper, to taste
• 1/4 cup ketchup
• 1/4 cup brown sugar
• 1/3 cup rice vinegar or apple cider vinegar
• 1 1/2 tablespoons soy sauce
• 1 1/2 tablespoons cornstarch
• 6 cups rice, to taste, cooked and hot
• 3 green onions, to taste, sliced