Cook spaghetti according to package directions.
Meanwhile, in a saucepan, combine the soup, water, lemon juice, basil, garlic powder, salt and pepper.
Stir in vegetables; bring to a boil.
Reduce heat; cover and simmer for 3-5 minutes or until vegetables are tender.
Stir in chicken; heat through.
Drain spaghetti; add to chicken mixture and toss to coat.
Sprinkle with Parmesan cheese.