Other torts, like sulcatas and leopards, will get sick on fruit. These two need it dry and can develop severe bone deformities if fed animal protein. Again, tortoises need a heat gradient. All box turtles and tortoises do better with a hide box, but doubt there's any law on that anywhere. Lots of turtles, snakes, and lizards may not eat if not given a hiding box or other cover.
Newspaper is best for iguanas, though.
Cedar chips should never be used as a substrate. If a store seems to have everything right in the way of husbandry, yet the animal is still thin and dehydrated, parasites should be suspect. Pinworms, hookworms, flukes, and tapeworms infect reptiles with regularity.