Way too much chickenology going on here. What did chickens eat before pelleted food was invented?
I used to work at a feed store and over the years I've fed layers, growers, breeders, organic, ex batt food you name it, to all ages of chickens, depending on what I could get cheap due to it being out of date etc. My flock lay well, look good and breed very well. In fact nothing bad has happened as a result of what feed they've had.