does it look like the pic above the name "KATYDIDS" in this link? http://web.archive.org/web/20060503233712/www.chameleonjournals.com/husbandry/
its rather hard to tell but thats what it reminds me of! if so, i belive they are safe for your cham not positive tho, you probably should wait for a positive yes on whether they are safe! before you feed it!
Agreed! Its a katydid. They should be just fine to feed to your cham. Some people say to snip or break off their sharp back legs if they are quite large (4" for the giant katydid.) The cilantro they were eating should be safe for your cham as well.