General directed reply:
This is the consequence of breeding and overfeeding. Once it is started it is very difficult to make them stop. To get her to stop of even slow down your going to have to cut her food intake to barely anything.
If you decide to breed a chameleon, make sure that you know it has the snowball effect. Once bred there is a strong chance that most species of female chameleons will retain the sperm and produce many clutches off of the same breeding. Depending on your feeding regime, its possible that they will produce more eggs almost immediately after the first was laid. This can wear a female out in just a matter of a couple years.
If you are keeping female chameleons, especially Veileds (and a little lesser so, panthers) even if your female has NOT mated, there is always a possibility they will produce infertile clutches without the stimulation of a male. It can have ties to their diet being too large (overfeeding). So if you are keeping these females as pets and want them to live long lived lives, you should re-evaluate feeding. The difficulty is that no one can tell you just how much you should be feeding them.