Nutritional Facts 1 taco (prepared with lean ground beef and reduced-fat feta cheese) equals 130 calories, 6 g fat (2 g saturated fat), 20 mg cholesterol, 386 mg sodium, 9 g carbohydrate, 2 g fiber, 9 g protein. Diabetic Exchanges: 1 lean meat, 1 fat, 1/2 starch.