1Heat 12-inch nonstick skillet over medium high heat. Add oil; tilt skillet to coat bottom. Add chicken; cook 4 to 5 minutes or until no longer pink in center, stirring frequently. Remove from skillet; cover to keep warm.
2In same skillet, cook carrots and zucchini 5 minutes or until crisp-tender, stirring frequently. Add chicken and soy sauce; toss until chicken and vegetables are coated with soy sauce. Remove from heat.
3Sprinkle with onions and cheese. Cover; let stand 2 minutes to melt cheese.