It is important to know that even if your chicken is very large or fat, it doesn’t always mean that they will lay large eggs. The skinniest chicken in my “flock” is the one that lays the largest ones and double yolks. The fattest one sometimes lays no eggs at all or small ones. Our srawniest chicken lays bigger eggs, but they are on the pale side. All chickens lay different eggs and it has nothing to do with appearence of the chicken, research a chickens qualities before purchasing one to ensure that you get all your desired needs filled!