Season chicken, if desired, with salt and pepper. Heat oil in deep, large skillet over medium-high heat and brown chicken. Add onion and garlic and cook, stirring occasionally, until onion is almost tender, about 4 minutes. Stir in carrots, zucchini and green onion and cook, stirring occasionally, an additional 5 minutes.
Combine boiling water with Knorr(R) Rice Sides(TM) - Chicken flavor in 13 x 9-inch baking dish. Stir in vegetables and chicken. Cover tightly with aluminum foil.
Bake 30 minutes or until chicken is thoroughly cooked and rice is tender.
