Many years ago, about 20, I was young and ignorant and loved chameleons. I loved them so much that I just absolutely had to have a female Jackson’s after having a male for a while. However I didn’t have the space, resources or working motivation to get another enclosure, so I decided to just put them in the same one.
The female was always showing gravid/stress colors at first and I just figured it would go away and they would adapt. That did not happen and I subsequently almost killed the both of them after a couple of months of allowing them to live in a perpetual state of akathisia. It was no doubt utter torment for them both. I realized this and decided to re them to a local breeder that nearly ended my life when I told him what I had done.
That was my experience. Maybe that was an anomaly or an isolated case. But I somehow doubt that with vigor.
Just don’t do it unless you have an actual master bedroom size enclosure and versed experience working with Jackson’s.