Obviously something is bothering her eye and she is trying to fix it. Mist her for half an hour a few times a day. Most hand misters spray too large droplets so the animal usually won't sit in the mist. You want the mist so fine it is almost a fog. If you can't turn on an automatic mister for 10 or 15 minutes at a time many times a day for a day, put her on a plant in the shower and run the shower so the water hits the wall (NOT the chameleon) and let the fine mist that bounces off the wall surround her.
So many problems with chameleons would be solved if keepers would just spent the $130 for a MistKing. (I would spend a little extra than just the starter MistKing, adding extra nozzles, a shut off valve, extra tubing and a tube cutter.) Don't buy a cheap unit--they break when they run dry and believe me, you will run them dry many times. You can also buy a fogger, but a screen cage won't let the fog build up as well as one with solid sides.
This is the fogger I use. I put a tube down into the outlet to route it into the cage.
https://www.amazon.com/TaoTronics-U...=8-4&keywords=taotronics+cool+mist+humidifier