In a large nonstick skillet cook chicken in hot oil over medium heat for 4 minutes. Turn chicken; add squash.
Cook for 4 to 6 minutes more or until chicken is done (170 degree F) and squash is crisp-tender, stirring squash gently once or twice. Transfer chicken and squash to dinner plates. Spread pesto over chicken; sprinkle with cheese. Makes 2 servings.