Chickens are easier to feed than horses, just put a big feeder in the run and they will stop eating when they are full. They will always prefer their foraged food to dry pellets. Have fun!
Thank you everyone for the welcome! The coop is 4'x6' and is 8.5' high at the peak of the roof, has 4 nesting boxes and a roosting pole. The run is 5'x8'. I was hoping to get 3 more layers and in the future rotate about 2 fryers.