Nutritional Analysis: One serving (prepared with reduced-fat cheese, reduced-fat mayonnaise and fat-free tortillas and without salt) equals 255 calories, 7 g fat (2 g saturated fat), 37 mg cholesterol, 736 mg sodium, 31 g carbohydrate, 2 g fiber, 15 g protein. Diabetic Exchanges: 1-1/2 starch, 1-1/2 meat, 1 vegetable.