I sure hope they don't have a heart attack or get liver disease. I read that each hen should get only about 1/2 cup of laying feed a day, so I will try to limit them to that. I have cut out the scratch, brown rice, & strawberries for now. I have only the 2 chickens, so they don't get competition from a big flock, food-wise.
I am going to try to let them out very early each day and let them put themselves to bed, so they can get all the free-ranging exercise possible. Unfortunately, it's supposed to be quite stormy here for the next 3 days, so they'll be cooped up.
I am also keeping the cats' food out of their reach. They used to munch on it when I wasn't looking! Maybe they made themselves fat from stealing from the cats. That thought allays my guilt for giving them too much scratch, a little bit. :>) Poor Phat Girls.