Can you get a video of her? Upload video to youtube and provide a link.
You can try deworming again since it seems like the dosing was off.
See if you can entice her with wet feed, bits of egg, etc. to get her eating.
Medications are getting hard to source, so you'll have to check around...
Same hen as your other thread? Did you see where you needed to adjust your dose of dewormer?
https://www.backyardchickens.com/threads/%F0%9F%90%94-paprika-needs-help.1618086/#post-27642900
Do you see any mucous, facial swelling, bubbles in the eyes or other symptoms of respiratory illness...