Is this the first time you have seen her digging?
You should provide her with an appropriate place to dig in to lay her eggs. I usually have a container that, when empty, is big enough for the female to fit into with a couple of inches to spare on all sides of her. I fill it about2/3rds full of washed sandbox sand. This gives her a place to start to dig to show you that she is ready to lay eggs. When she is intent on laying them, then I move her to a 65 liter rubbermaid container that I have filled about half full of washed sandbox sand that is moistened so that it will hold a tunnel. I put a branch in the container so she has somewhere to sit when she's not digging/done. I cut a large hole in the lid and cover it with screen so that I can put a light over it when she is in the container. I put the chameleon in and put the lid on and the light over it. Don't forget that a closed container like this can get hotter than a cage, so don't make the light too big a wattage. I leave her there until she has laid the eggs and buried them. She can be fed and watered in this container....but be sure not to leave any insects there that she didn't eat...they could chew on her or the eggs.
Don't let the female see you while she is digging...it will cause her to abandon the hole. If she does this often enough she can become eggbound.
Concerning what Brad said about scaling back (thanks, Brad)...I have female veileds that are over 5 years old that have never laid a single egg. It seems that if you control their diet and keep the basking area just a couple of degrees cooler, they don't lay/produce eggs. You don't want to starve them...just keep them on a mild diet. Once the chameleon has laid her eggs, I feed her well for a few days and then I start to cut back. This seems to prevent the egg follicles from growing. I keep the female on this diet until I want to mate her at which time I increase the basking temperature and the amount of food I am feeding her.
Hope the egglaying goes well!
