Heat 1 tablespoon oil in large nonstick skillet over medium heat and cook chicken, stirring frequently, until browned, about 3 minutes. Remove chicken and set aside.
Heat remaining 1 tablespoon oil in same skillet and cook tomatoes, onion and zucchini, stirring frequently, 3 minutes or until tender.
Combine orange juice and cornstarch in small bowl; stir into skillet. Add Knorr® Chicken flavored Bouillon Cube and break apart with wooden spoon. Bring to a boil over high heat and boil, stirring constantly, 1 minute.
Return chicken to skillet. Simmer 1 minute or until chicken is thoroughly cooked; stir in basil. Serve over hot rice.