What species of chameleon? Veiked?
How old is she? Is it female for sure?
Please post some recent photos.
Please answer the questions in the how to ask for help thread at the top of the health forum so we can make sure your husbandry isnright.
There should be an egglaying bin in the cage so she can show you when she's ready to lay. It should be opaque and at least 12" deep x 8" x 8" . inuse washed playsand that is just moist enough to hold a tunnel. The best brand I've found is produced by Kings and comes in a white bag with red, blue and yellow sandbox toys on it.