@aubslemond
I agree with kinyonga, she might still have eggs. She looks quite large, as I mentioned in the other thread.
If it were my cham I'd give her a proper lay bin and see if that helps over the next few days. Has she been searching her enclosure endlessly, trying to crawl out of the corners or digging in the bottom recently?
I would also get her to a vet also, but beware, handling her too much or moving her too much may make things worse so I would try the above suggestion first.
As far as your supplentation goes, make sure she has calcium with no d3 at every feeding, d3 twice a month and multivitamin twice a month.
Calcium is very important for chams, especially gravid females which you probably know.
I suggest also to get a t5 uvb bulb. D3 is very important for properly calcified eggs, too. Not sure if this has contributed to her possibly being egg bound. You mentioned the one you had went out which makes me wonder how old it is or if it was a bad bulb. Now she doesn't have one.
Your basking spot for her is way too hot. I would get a cooler bulb and shoot for somewhere close to 85 Fahrenheit.
How much water are you using during mistings? For how long?
I would also get more plants, preferably ones with more cover so she has places to hide. That being said, can we see a picture of your set up?