Chicken turned full on CUJO! Biting!

[JoD2Tall]

Hi, I have 5 different hens that just turned 1 year old. They are all handled regularly, and my Plymouth Rock, who was always very sweet, literally just started attacking me with twisting bites! Then she tries to spur me like a pheasant rooster. I've never had a chicken rooster, so it's the best I can describe. This girl wants to fight! She comes at me, like she's going to eat me???
No changes in environment, food, and she still laying like normal.
I went away for several days to visit my son, and my husband helps me care for them daily. So, he maintained our routine while I was away.
All the others are acting very normal.
I never thought I'd want to pile drive a chicken, but the thought momentarily surfaced. She's gone cookoo for finger puffs.
Please help, if you have any insight while I, clean my wounds, and design a bubble wrapped ball to re-enter her majesty's presence.
Oh, and she is definitely the leader of the pack. So, I don't want her teaching the others that we have a West Side Storyline building up here!

 

[Nonafel]

Is she the dominate hen of the group?

I always wear gloves around the cheeps just as a precaution, my fingers are important. Their claws are sharp too...

 

[FrostRanger]

Do a health check on her but you may end up having to cull her. I've had success with getting a less aggressive hen to leave me alone (she was only biting when I got close and not hard) but her behavior is far more extreme and could end up hurting someone

Thankfully extreme human aggression in hens isn't common but it's still no more tolerable than it is in roosters and she shouldn't be allowed to breed as she can pass her attitude on to her chicks