Hen being picked on

[Hkass]

Do you know for sure that she is being bullied by one particular bird?
I would remove the bully....if it's just one bird that is causing the damage.
You may need to do some observation to find out just what the problem is.

Loss of feathers doesn't need to 'heal'....they won't grow back until she molts.

You might put some 'hiding places' in the run.
https://www.backyardchickens.com/threads/a-cluttered-run.1323792/

What all and how exactly are you feeding?



Is made by Nutrena/NatureWise...and doesn't actually 'fix' feathers as the name implies.
It is 18% protein which might help..depending on current diet.

I have only seen one hen peck at her. If it doesn't need to heal, how do I stop the others from pecking at the bald spot? Won't they peck her because that spot is different?

 

[aart]

Won't they peck her because that spot is different?

Maybe, maybe not.
That's why you need to spend some time observing their behaviors to find out just what the problem might be...then you could render a solution.