In a large heavy pot with a lid, combine pasta, 4 cups water and olive oil. Bring to a boil over high heat. Cook pasta, stirring frequently, until al dente. The water should be nearly evaporated; this should take about 10 minutes. If water is left in the pan, drain pasta before adding the remaining ingredients. Add tomatoes, chicken, basil, oregano, olives and cheese. Toss together, then add lemon juice, salt and pepper. Kitchen Counter Per serving: 440 cal, 17g fat, 50mg chol, 26g prot, 47g carbs, 4g fiber, 740mg sodium