1. PREPARE the spaghetti according to package directions.
2. MEANWHILE, heat a large wok or nonstick skillet coated with cooking spray over medium- high heat. Add the broccoli and bok choy and cook, stirring, constantly, for 4 minutes, or until tender crisp. Remove to a bowl.
3. ADD the chicken to the pan and cook, stirring constantly, for 4 minutes, or until no longer pink. Add the vegetables and spaghetti.
4. IN a cup, combine the stir fry sauce, oil, ginger, and pepper. Stir into the pan and cook, stirring constantly, for 2 minutes, or until heated through.