It has been a week. I don't have a lot of tolerance of aggressive pecking and one hen jumping on another, but the "get out of my space" peck doesn't bother me. That is chicken language for, "get out of my space".

And that's all I have going on.
For some reason, I have been "blessed" with some aggressive hens and roosters over my short 4 year experience as a chicken tender. My first flock had a lot of aggressive problems, particular Lucy and Verne, the cockerel, who ran rough shod over everyone. When Ethel ended up in sick bay with her head completely scalped, Verne lost his life. Although that settled down the flock, and he did seem hen aggressive to me, several on here have said that would have been against the nature of a cockerel or rooster. They instinctively protect their girls, not harm them.
I'll never know. I saw him go after Ethel and Shirl, very aggressively, but never Lucy, Rosie or Little Red Haired Girl. In fact, Shirl was afraid of him and wouldn't come out of her coop. Every time she tried, he went after her and she ran back in.
It wasn't until after he was gone that I saw extreme aggression from Rosie and Red, but they never actually hurt anyone. They just got crazy for a while. And then Lucy took the lead, and all was peaceful again. That time I would say it took about a month to sort itself out.
Well, that was a long answer. I just wanted to say every situation is different, and I've gone through the leadership shuffle 4 or 5 times now. As long as there is no blood, I let them sort themselves out. I still have a lot of guilt over Verne.