Just to be clear, I did not place a zip tie around her neck! I found it already there. I am not certain how she got it there, but she obviously put her head into one that was already zipped. It was about 5 inches in diameter in size
In your first post, it was clear (to me) that you had not put the tie on her neck. Chickens can get themselves into all kind of predicaments.She apparently put her head through a large closed cable tie, and couldn’t get it off.
How is she doing today? If there is wound and you can get some photos of that, it would be good. If it's scabbed over, then just take a really good look at it, see if there is redness, swelling, pus, odor or any indication that it might be infected.
Her behavior is more concerning, but if she is molting, this may be the reason why. But I would still observe her to see that she's eating/drinking. If not, this needs to be investigated further.