I agree with
@aart on this one.
My cockerel is very frisky first thing in the morning and chases the girls. Once he gets it out of his system, he's back to being a gentlman. It's normal with the hormones raging at this age. I was concerned at first but noticed the unwilling girls will get away from him and the willing will crouch down and let him mate. Once he successfully mates once or twice, he's fine.
As long as he's not injuring your girls, I say just let them work it out. Let them be chickens.