I don't know how good a pet a chicken would be although I've seen chicken "diapers" for them to wear in the home.
Mine do follow me in the yard and I pick them up and feed them a grass hopper as a treat when they allow me to handle them. I'll also scratch the ground with my boot and call "chick, chick, chick" to call them over to get a grub or cricket I've found. I only have hens and I would call them very tame. I'll hate the day when I have to butcher them.....and that's the problem with raising a chicken as a pet. I enjoy the light work and the benefit of fresh eggs but in the end my chickens are livestock and will probably end up as diner one day. I know there are two camps here with chickens but that's the one I pitch my tent in.