What's yalls favorite treats to give your chickens

[RumneyRoost]

My current group of pullets are weird, the only treat they'll eat is tuna. Perhaps it's because they have a large fenced area where they essentially free range? I've tried strawberry tops, blueberries, lettuce, cabbage, zucchini, etc. Fruits and veggies are a no go for them.
Once per week a give a small can of tuna to my dog as a treat, I pick out a couple small pieces for the chickens. They love it!

 

[Harmony Fowl]

Cooked rice is their favorite. I like it because it's cheap and comes bite sized for them and even a little will go a long way to feed them and keep them busy looking for more. Additionally, in the winter, serving it to them warm is a nice treat when the weather is very cold. In the warmer weather, greens and such are largely ignored as most of them get to free range all day and choose greens on their own. When selection is less in the winter, I will pick up some greens at the supermarket that are marked down and maybe just a little too soggy to be appealing to people and the chickens will gobble those right up, particularly if snow, rain and wind have prevented them from foraging. In summer, they love melon rinds. They eat way more of the rind than we do, almost all of it, and if refrigerated or frozen first they can make for a nice cool treat full of extra water on a hot day.