Oh, drat, I did it again: forgot to look at which section of the forum the question is in.
The question is in the "Pigeons and Doves" section, which makes my CHICKEN experience not very relevant. Oh, well, at least I did say "chicken" several times, so hopefully it was obvious what kind of...
I've never seen issues with cracked corn.
I've had times when I fed large amounts of cracked or whole corn, changing back and forth according to what was available at what price. I never noticed any crop issues either way.
With whole corn, the chickens would tend to eat it all. With cracked...