In A Skillet Or Wok, Stir-Fry Chicken In Oil For 6-8 Minutes Or Until Juices Run Clear. Remove Chicken And Set Aside. In The Same Skillet, Stir-Fry Peas, Broccoli And Red Pepper For 2-3 Minutes. Add Mushrooms And Onion; Stir-Fry For 3-4 Minutes. Combine Cornstarch And Sugar; Stir In Water And Soy Sauce Until Smooth. Add To The Pan. Bring To A Boil; Cook And Stir For 1-2 Minutes Or Until Thickened. Return Chicken To The Pan; Cook Until Mixture Is Heated Through And Vegetables Are Tender. Serve Over Rice. Sprinkle With Sesame Seeds.