Boneless, skinless chicken breasts have consistently been at the top of the list of lean proteins to eat for fat loss. In addition to being a fat burning powerhouse, Chicken breast also contains several essential vitamins including E, B6 and B12, riboflavin, niacin, thiamin and pantothenic acid. Minerals, which provide many of the health benefits of chicken breasts, are found in healthy numbers in just one serving. There are also small, but helpful amounts of calcium, iron, potassium and zinc found in chicken breasts. Chicken breasts contains no sugar or fiber but there are 27 grams of protein in just a half breast!