My dragon likes them. I give them to him as treats and I sometimes crush some up and sprinkle his salad with it to give him a little extra green motivation. Be careful though, when my dragon ate quite a bit of them, he ate less live food and his weight dropped. While there could have been other reasons for this (but I don't know what they'd be) it's made me only use them as a treat. (and his weight went back up)
I've recently heard that Beautiful Dragons has some sort of dragon chow for sale that is supposed to be a better substitute?
The pellets I have say right on the label that they are to be fed in addition to live food and veggies. It kind of reminds me of breakfast cereals saying "part of this complete breakfast" and then showing their cereal in the middle of bowels of fruit and plates of eggs and ham and every other breakfast food that ever existed. 8)
I feed crushed pellets to my dubia though, instead of cat food. They eat it right up and say yum. Crickets seem to like it, too.
so, to sum, my dragon eats them and loves them. He only gets five of the small pellets a day, though.
Hope that helps!
Mirthy