Today I went into the run and inspected all the wire very carefully. I found an area where there was an edge of chicken wire poking out down at ground level, 2 little spikes were sticking out around a post.

I folded it in and secured the wire, now I'm wondering if that might have been the culprit. Chick's eye looked the same today, they ran out of the run when I tried to catch the injured one, will try again later. Going to keep putting the AB ointment daily on it for now, they are all getting garlic and OACV as well.
Sounds likely that you've found the culprit. Every time I think I've finished a cage, I run my hands all over it, anywhere a chick could possibly get (even if someone would have to throw it there, lol...) and so many times I find something spiky that I didn't realize was there. I was so sure, lol! Always. I'm very, very careful when making cages yet there is always some overlooked spike, and they will find it sooner or later.
It very much does look like a wire injury to me, and as you say it does not look like it's healing well. Hopefully the chick will be okay, but, might be worth looking into anything known to soften contracting scar tissues (maybe stuff used for burns, off the top of my head regular vitamin E application will help there).
While I have you here Chooks, I also have another hen with an injury. She is molting first of all, so she looks terrible. Then I noticed her limping and staying in the coop, in a nest box in fact, although she isn't broody and isn't laying eggs. Upon bodily inspection, I found that her right footpad has a bumblefoot sore on it. I separated her in a box with straw, food, and water. She is getting higher protein food for the molt, scrambled egg, oats, and vitamin water. She is quite content to sit in the box and not move at all. She uses her right wing to prop herself when she turns around, not wanting to put weight on the right foot, it must really hurt.
I ordered sterile scalpels from amazon Prime and they arrived today. I also ordered betadine antiseptic solution. I have gauze, AB ointment, and vetwrap per the bumblefoot instructions I've read. Now that I have the scalpel and betadine, I plan to do the bumblefoot surgery today after an epsom salt soak. I have never done it before, but I have read a few threads about it and the chicken chick's how-to page. Just wondering if you have anything extra to add that I should know? I will probably do the surgery this afternoon or evening..