Cook pasta according to package directions; drain. , Meanwhile, in large skillet, cook sausage and onion over medium-high heat until sausage is no longer pink, 5-7 minutes. Add garlic and cook 1 minute longer. Add zucchini and peppers; cook until crisp-tender, 3-5 minutes. Add tomatoes, salt and pepper. Cook and stir until vegetables are tender and begin to release their juices, 5-7 minutes. Serve with pasta.