I see you are new to the forum...so welcome!
Did the sore on the lip get better? Is your chameleon eating yet?
Can you post pictures of the sore and the chameleon please?
Its been on here many times...but here it is again...
greens (dandelions, kale, collards, endive, escarole, mustard greens, etc.) and veggies (carrots, squash, zucchini, sweet potato, sweet red pepper, celery leaves, etc.)
There is also a good one here...
http://www.adcham.com/html/husbandry/gutload.html