I had the same issue with my 6 hens when I got them from a friend. they didn't want the good expensive layer food I switched them to (like people, they want junk food) so I was thinking maybe they just weren't hungry cuz they were free ranging and I thought they might be eating a lot of my compost heap.. well, when they started feeling scrawny, I set out to figure out a way to get them to eat their pellets.. I tried mixing fruits and veggies in, they cherry picked it. I tried a lot of stuff and then I thought, maybe it looks boring, cuz they go for the colorful treats, so I added some natural food coloring to the food by mixing food coloring in a little water and pouring it over the food. I used red, blue, and purple and they ate SO MUCH!!! I did that for 3 days and realized it was a LOT of extra work and decided to try giving them wet uncolored pellets because I noticed they peck at dry food but wouldn't gulp it like they did damp pellets... VOILA!!! it wasn't the lack of color, it was that they didn't like the pellets dry!! so now, I give them a big scoop of pellets and fill the bowl (til its level with top of pellets) with hot water and wait 5 mins for it to absorb it. they are eating the entire amount every day, they are fat, and they aren't screaming all day anymore