My chickens are fat and they are free range. They weight more than my cats so around 10# or more. When you pick them up you can feel the fat in them. They are fed: yellow field peas (not split peas), wheat, corn, barley all mixed together, about a cup of layer feed for all 30 hens, oyster shells and mineral in a separate dish, and table scraps. We ranch and have been calving and the chickens eat all the placentas they can. When the placentas were numerous I didn't feed the chickens at all. My chickens shine. Out of 30 chickens we get 20 to 24 very large eggs a day with at least 3 being so big they don't fit in a carton. The eggs have dark yellow yokes and look good in general. People love my eggs. If they are too fat what could I do about all and why?