My cham hasn't been eating properly since I moved him into his adult cage, he's been in there for 2-3 weeks and has barely eaten. I have changed his food around loads and given him lots of variety but still doesn't want to eat.
Are you sure it's a hunger strike? Your cham could be sick or have parasites. When is the last time he had a check up or fecal? If you are positive it's a hunger strike you could try some different feeders. They usually go for something green so try hornworms. If he's caged they like things that fly so maybe try some blue bottle flies or house flies. It would probably be a good idea to fill out the out for help form and post some pictures.