I use Purina FlockRaiser with all the chickens, the hens, "toddlers", rooster. I just have a separate dish of oyster shell for the layers. They just know if they need the extra calcium.
My flock also have free range time. And they do get treats, rice, scrambled eggs, BOSS (black oil sunflower seeds), scratch, oatmeal, bananas, cut-up grapes and other fruits & veggies.
My flock also have free range time. And they do get treats, rice, scrambled eggs, BOSS (black oil sunflower seeds), scratch, oatmeal, bananas, cut-up grapes and other fruits & veggies.