I personally expect my chickens to eat anything I put into their feeder and I don't particularly care if they "like" it or not.
How much they eat may or may not have to do with "liking" the feed.
Over Christmas I had to buy an emergency bag of the cheap layer feed from Walmart because we couldn't get to the farm store before it closed for their usual all-flock. I noticed that they went through that 50lb bag faster than usual -- my guess is that the lower nutritional quality resulted in them eating more.
IMO, if you are satisfied with the nutritional profile and the feed is not moldy, bug-infested, stale (check mill date on bag), etc. there is no reason to fuss with it to try to get the chickens to eat it.
No healthy animal will starve itself in the presence of food. Put the feed into the feeder, walk away, and let them eat what they eat.