If you want cuddly chickens you have to cuddle them every day. Don't overly chase them or you will probably stress them out and make them worse. I started off when feeding, by patting all of them in turn, I also try to pick up as many as I can and start with just a few seconds and extend the time out more and more. I can pick up Elsie and carry her around for ages now no problem, but the others are more skittish. Persistence is the key, like taming any animal. The more you are with them and handle them the better they'll be.