Newbie from Kentucky

Hello, My name is Doug and I live in Lexington Kentucky. I do not own any chickens of my own yet but I have 3 dogs (mini schnauzer, giant schnauzer and a cocker) plus two appaloosa mares and I am free leasing a TB mare. I use to be afraid of chickens due to being chased and treed by a particular vicious banty rooster at my uncle's farm. This happened when I was 5 so I was a bit apprehensive when I moved my horses to a new boarding farm, owned by my friend Linda who is an avid chicken farmer. She free ranges. I soon got over my fear when I realized some basic chicken pshycology. If any of the roosters challenge me, I do not flee but run back at them, so far that has only happened once with Harlem our (her) Black Jersey Giant roo. I went all out and bought an incubator and plan on hatching my first set of chicks the end of April. Linda is going to give me some eggs from her chickens and I am getting 12 Delaware eggs from a local farmer. I fell in love with the pictures of the Delaware and would like to add some to Linda's coops which she has no problem with as long as we do not get overrun with roos.
Also would like some information on a special needs hen. she is a Golden Comet and has a cross beak. Linda has bought her special feed and even hand feeds her night crawlers when she can get them but the hen keeps losing condition. She is sweet and follows you around and begs to be picked up. she weighs nothing. What can we do to save this gallant and sweet hen? We have already segregated her from the Roos since breeding hurts her. Any Advice? Thanks Doug