That cham looks really bad. Is the chameleon dead already? I don't think he was fine yesterday, please fill out the ask for help form, search for it and copy and paste your answers. As for the cham, I'm not sure anything can be done. Can you please post pictures of the enclosures as well?
Take him to the vet ASAP, fill out the ask for help form completely (link is in my signature below), and post a pic of the full enclosure. Have you read the veiled care sheet here?