1 (13 1/2 ounce) can skim evaporated milk  | 
                                                1 1/3 cups skim milk  | 
                                                3 tablespoons all-purpose flour  | 
                                                2 -4 garlic cloves, minced  | 
                                                2 teaspoons vegetable bouillon granules  | 
                                                3/4 lb boneless skinless chicken breast half (about 3)  | 
                                                2 teaspoons olive oil  | 
                                                1/2 teaspoon cayenne pepper  | 
                                                1/4 teaspoon fresh coarse ground black pepper  | 
                                                1 cup chopped fresh tomato  | 
                                                1 1/2 cups imitation crabmeat (about 6 ounces)  | 
                                                3 cups penne pasta (10 ounces)  | 
                                                2 quarts boiling water  | 
                                                1 tablespoon salt (optional)  | 
                                                2 tablespoons grated lowfat parmesan cheese (optional)  | 
                                                chopped fresh parsley (optional)  |