Heat a large nonstick skillet sprayed with no-stick cooking spray and cook chicken over medium-high heat about 4 minutes or until chicken is thoroughly cooked, stirring occasionally. Remove from skillet and keep warm.
Add zucchini and onion and cook about 5 minutes or until crisp-tender, stirring occasionally. Stir in garlic and cook 30 seconds. Add dissolved Knorr® Chicken flavor Bouillon Cube and chicken and heat through. Stir in sour cream. Garnish with cilantro and serve with lime wedges.