Romaine is fine. Just for a main diet, which is a lot of what misinformed do, feed just romaine, then it's bad. Some suggest pulling out the spinach, I don't know about your species, I have a leopard and I don't pull mine out. There's not a lot of it in my mix. Some of the stuff you mentioned, I have never heard of. Most likely if he eats it, it's fine. Most will say they won't eat what they shouldn't.