This whole conversation is making me feel better! I'm a new chicken owner with 1 Ameracauna rooster and 3 hens. I've had the rooster since he was just a few weeks old, and never had any problems with him until the hens started laying. Now, I don't leave the porch without a broom. 
He never bothers my husband who never feeds the chickens or gives them treats, but he'll come after me - his primary caregiver!
He's never really hurt me as he has no spurs yet, but it is startling to see a rooster suddenly flying at your shins.
He's quite tame in other ways though. My chickens are free-rangers and if they aren't in the yard when I go out with treats, I only need to call the rooster. He'll come running from wherever they are, and call his hens to follow. However, if I'm empty-handed, he follows me, and usually ends up attacking. He's like a rooster/stalker.
Is he just trying to intimidate me into giving treats ALL the time? 
I don't really like his behavior and am considering replacing him when I do hatching in the spring. 
I find I'm much less productive at yard chores when carrying a broom!