While pasta is cooking, mix crushed crackers and lemon peel in small bowl; set aside. Spray 10-inch nonstick skillet with cooking spray; heat over medium-high heat. Cook chicken and garlic in skillet 2 to 3 minutes, stirring frequently, until chicken is brown. Remove skillet from heat; stir in pasta and remaining ingredients. Spoon chicken mixture into baking dish. Sprinkle with crumb mixture.