Congratulations for the quickest appeal to the people most likely to help I've seen.
He's probably a bit perturbed over the move so has gone to the safest realm.
Do you have access to her place? Can you get her lights? That would be really helpful.
I don't know where you are, but if it's at all comfortable outside (meaning you can be happy in a T shirt) you can put the cage outside for a few hours every day...that will lessen the need for other indoor lights.
You need food for the chameleon. The easiest is crickets. You should be able to get them at any big box pet store. If you need to drive a lot to get to one, call ahead to make sure they have crickets.
The crickets food will be the chameleon's food (chomp!).
In a best case scenario you will do all sorts of things, but under the circumstances, providing anything remotely nutritional would be good. FLUCKERS makes reasonable cricket chow, you should be able to buy that at the store with the crickets.
If this goes on for long, you'll probably want to look at other options on feeding the crickets.
You should probably feed at least 7 large crickets per day.
If you don't have a way to keep the crickets, send me a PM and I'll try to help.