My chickens peck at my feet when I walk near them, and especially into their coop

Why do they do this?? After everything I go through to make them happy, they still hate me supposedly. Funnily enough, my rooster is the nicest out of all of them, he just keeps his distance and roos like a maniac all the time lol. What can I do to make them stop? It makes me nervous for when my son starts walking and is around them.

edit: just for more context... I do wear shoes. mainly mud boots. So I don't think they're going for my toes thinking their food