In large saucepan cook pasta according to package directions, adding broccoli florets during the last 3 minutes of cooking time. While pasta is cooking, remove meat from roasted chicken. Coarsely chop chicken. Drain pasta and broccoli; set aside.
In same saucepan combine cheese, the 3/4 cup milk, tomatoes, and 1/4 teaspoon freshly ground black pepper. Cook and stir until cheese is melted. Add pasta mixture and chicken. Heat through. If necessary, thin with additional milk. Sprinkle fresh parsley. Makes 4 servings.