Why? If you want to feed veggies or veggie products use either mixed pellets,carnivore and omnivore, or pre-feed live crickets or feeders with spirolina or nori.
If you can get them on the pellets that will work , but in the wild as far as I know the only veg they get are what their prey comsumed and are still inside the preys stomach.
Regards Jon
I actually saw on the discovery channel how they eat seeds and berries that fall off tree branches. Not exactly veggies but if they eat those they'll probably go for vegs also.