A good protein boost for chickens is either pig or hog chow, commercial catfish food, kibbles dog food, and some types of meal like blood meal, fish meal, bone meal, shrimp meal or meat byproduct meal. In small flock settings a can of good dog food will do wonders for chickens.
As for feeding boiled eggs that is perfectly acceptable but why go to the trouble to peel a boiled egg that you are just going to feed to your hens anyway, why not crush it up and give it to you birds shell and all????
As for feeding boiled eggs that is perfectly acceptable but why go to the trouble to peel a boiled egg that you are just going to feed to your hens anyway, why not crush it up and give it to you birds shell and all????