Chickens are creatures of habit. They have a habit of eating certain things right now, but they need to move to eating their balanced feed that has the right nutrients.
My chickens really think that wet feed is a treat!! They run over and practically lick the containers clean! I use pelleted grower feed, add water and wait 10 min...add more water if needed to a pancake batter consistency (their preference). I might stir in some scrambled egg or rehydrated alfalfa, and sometimes sprinkle some seeds or grains on top. Important to keep in mind protein percentages too. I use a 20% grower feed. Alfafa is 16% protein minimum, so their protein content is not taken below what a chicken generally needs (15-16% minimum).
True treats should be 10% or less of their food intake. However, at this point, you need to re-train them. Either give them only pelleted feed (and absolutely nothing else but that and water) or try a "treat" of wet feed. Try a bin with really wet feed - like thinner pancake batter, and another bin with thicker wet feed - more of a consistency of oatmeal (some BYCers find this is the texture preference for their flock) and you'll find out what your flock likes.
Good Luck.
