If you have layers, it's best that they have access to layer food all the time. Mine free range all day and seem to prefer to eat what they find, but this time of year they still need lots of feed. I've been letting them into the garden and that has reduced the feed consumption a lot, however I noticed when it rained for a couple days I suddenly went through way more food, probably because they were sitting around under shelter all day instead of finding food.
I usually give them kitchen scraps and their own egg shells back during the middle of the day. I usually find something special for them to snack on too because kitchen scraps aren't that plentiful and for being chickens, they sure are pigs!
