Not familiar with it IDT(I'll have to look it up), but I can say if it's safe for you then it's probably safe as a gutload. Even spinach is fine every once in a while. I don't know of any edible greens that I wouldn't use as a gutload. The only thing that comes to mind that I'd be hesitant to gutload with is avocado since it is pretty toxic to birds from my understanding. Chameleons seem unaffected by a lot of things though, so I wouldn't worry too much.