Missing neck feathers???

[Butterscotchbitesfinger]

Looks like something grabbed a mouthful.
I don't think that's from bugs, but.......
My Bug Check notes:
Have you checked them over real well for mites and/or lice?

Google images of lice/mites and their eggs before the inspection so you'll know what you're looking for.

Part the feathers right down to the skin around vent, head/neck and under wings.

Best done well after dark with a strong flashlight/headlight, easier to 'catch' bird and also to check for the mites that live in structure and only come out at night to feed off roosting birds.

Wipe a white paper towel along the underside of roost to look for red smears(smashed well fed mites).

Good post about mite ID by Lady McCamley:
https://www.backyardchickens.com/threads/my-chicken-has-mites-now-what.1273674/page-2#post-20483008

I will do this tonight thanks. I was going to grab her and check before I left for school but she was laying so I left her alone.

 

[Butterscotchbitesfinger]

I agree with @aart . It does look like something ripped the feathers out, either a predator or she got caught somewhere (which is less likely) and they were ripped out in her escape.

Possibly but I haven’t seen or heard of much predator activity in this area

 

[Butterscotchbitesfinger]

You may never find out how it happened.
Don't think it's a health risk or anything can that needs, or can be done, about it.
Just keep an eye on it and her for more patches or picking.
If feathers were fully plucked out, they should start to regrow within a week or so....
...or they may not grow back until her next molt.

Ok thanks