Instead of deep-frying chunks of chicken, this streamlined take on an American Chinese restaurant favorite opts for stir-frying it. Sweetness comes from pineapple chunks and juice, plus a touch of brown sugar, while rice wine vinegar delivers that pleasing sour punch.
In a large non-stick skillet, heat oil over medium-high heat. Season chicken strips with salt and pepper and add to pan. Brown chicken and remove to plate. Add red and green peppers and cook for 1 minute.
Stir in pineapple chunks, juice, sugar, vinegar and broth and bring to a simmer. Simmer until sauce begins to reduce. Stir in cornstarch mixture and bring liquid to a simmer. Stir in chicken strips and cook for 5 minutes. Serve over rice.