I sort of figured he had a 'bad' attitude because of the look and posturing in the picture. Don't let him get away with any BS. You are bigger than him and human aggression can be dangerous especially if children are involved.
Yes, and that's the reason we got the chickens in the first place, my daughter is obsessed with animals. He is probably going to have to move on soon...luckily 3 of the 4 we got are friendly girls that are laying 4-5 eggs per week each.