rainbowmealworms has a great chameleon sample pack for like 16 bucks it includes a pod of hornworms, supers, phoe worms, dubais, my chameleon wont touch the green hornworms so far but he loves the Phoenix worms they are smaller but supposedly healthy. Also you might try to provide an alternate feeding bowl up higher in the enclosure under the UVB mayb its supposed to stimulate natural behavior like feeding.