Don't quote me on this but I have always been told there is a good chance your cham will eat the foliage in its environment/enclosure but if the plant is on the approved plant list (which it is) then it is okay, as it is non-toxic. However, this rule may depend on the amount of plant your cham has ingested. And of course, if your cham has eaten ALOT of Ficus, then I would be curious as to WHY he's eating it.