I meant he wants to mate. He really, really wants to mate. He's young and has no clue how to impress the hens. Many cockerels will tidbit (then eat all the treats themselves). They also chase the hens and mate if they catch them. (Easier to ask forgiveness than permission) A good hen will teach him a lesson. A horny cockerel will usually grow out of it. On the pro side, a good rooster will always watch and protect his flock.
I only had one "unpredictable" rooster.... out of several wonderful Orpington roosters. The one wasn't exactly aggressive, but sometimes he'd attack the pooper scooper. My son (when 3-year old) ran from him once & after that the rooster felt he should chase my son. Needless to say, we didn't keep the roo. Never run or change your course / pace for a rooster. If he's standing his ground just walk by him - but also keep an eye on him so he doesn't try to sneak up behind. After all, he's just a bird. I pick mine up and carry them to bed in the garage each night. They get used to it. By the time they're a year old, any person can just bend down and scoop up the rooster at any time of day.