Yes, if she is old enough, she can produce eggs without ever having mated and with her belly looking like it's full of marbles she obviously has eggs she needs to lay.
I would immediately make a laying bin and put it in her cage. If she can't find a suitable place to lay eggs, like when there is no laying bin, she will die from becoming eggbound.
Here is a good how to https://www.chameleonforums.com/laying-bin-set-up-educational-video-77225/