I know this post is a few months old, but I found it looking for the same answers. I am currently switching ours over from medicated starter crumble to laying pellets, and they don't seem to like it. I have two feeders out there, one with crumbles, one with pellets. The crumbles one is always near empty, while the pellets haven't needed a refill (2 weeks now). I think it really is just preference.
My question is this though. I assume roosters can eat whatever we throw at them, since I am sure most just feed the same to the flock. But I had read on some forums, that laying pellets may make an already aggressive rooster, lose his cool. Any truth to this? I kept an older roo to protect the babies of a breed I really wanted, and I swear he is still mad I took his 3 sisters away... LOL He gives me that red eye glare, not quite confident enough to confront me, but seems to be thinking about it more and more. And he's not little, he stands, easily, 2 feet tall at 7 months old.
All the other chickens let me pet them, they will get in my lap, take treats from my hand. He won't come up to me (while I am facing him), and they won't go near him. There were a few times I thought maybe curiosity would kill the roo attitude, but he ended up strutting away.
I asked a neighboring farm that has chickens their advice, I was told to just eat him.... said I'd have to get rid of a nasty roo anyway, might as well make use of it..... Anyone have any other advice? I'd rather try to make friends with him before plans for dinner.. ;-)