What’s this?

[Carrielola]

I went in the check on my chickens mid day and she was roosting and won’t open her eyes. She has these sores on her comb and eyelids. What is this and what should I do?

 

[CCsGarden]

That looks like fowl pox. Don't pick at it. It should heal on it's own. Extra Vitamin E can be given along with a drop of oregano oil in the water to help it heal faster.

 

[Eggcessive]

The scabs on the comb are definitely dry fowl pox, a limited virus spread by mosquitoes. Pox can be spread by disturbing scabs, or shed scabs. It usually clears up in about 3 week, and there is no treatment. I would dab a bit of plain Neosporin or triple antibiotic ointment into the eye, just to prevent a secondary infection. Here is some reading:
https://the-chicken-chick.com/fowl-pox-prevention-treatmen/