-- didnt know about "NOT" to feed layer to non egg bearing .. oops.. ? so.. any thoughts..
I use my chickens to clean up after my goats. goats are pigs and leave 1/10th of their feed on the ground and are too spoiled or lazy to find the random grains they knock out of their feed buckets in their hurry to guzzle their food (grains hay minerals whatever). Without the chickens there would definitely be a resulting vermin problem from the mess on the ground.
My thoughts are that I don't worry too much about what the chickens eat because like Turkeys they are scavengers. They get table scraps and old bread and tortillas - the aforementioned goat leftovers and yes layer pellets. If you are feeding your chickens entirely layer pellets, you are putting too much thought and effort into them IMO. I get plenty of eggs like clockwork out of the chickens and the goats get into their hen house and steal their layer pellets on occasion leaving me wondering what they ate on those days (goat poop maybe or bugs they scratch up from under the straw and goat poop - mwhatever they seem HAPPY as can be and the eggs taste wonderful)
My secret is the special treat. To keep them happy and engaged I make a point of about once per week to take a 2 pound bag of carrots and throw they through the food shredder and make sure the goats don't muscle in on it - it is the chickens special treat. They love it to death and it makes the yolks nice and dark orange with all the carotene - I am also fond of saving up egg shells and powdering them in a grain grinder and sprinkle a little of that on the carrots.