Add bell peppers and onion to same wok; cook and stir 1 minute. Add 1/4 cup water; cover and cook 2 minutes or until vegetables are partially cooked. Uncover; stir in pineapple and sauce mixture. Cook uncovered an additional 2 to 3 minutes or until vegetables are crisp-tender. Return chicken to wok; cook and stir until thoroughly heated. Serve over rice.