Here's the thing... would your cham eat a scorpion? Yes. Some chameleons do eat scorpions in the wild. The real question is should you risk harm to your chameleon? That answer is no. In the wild a chameleon needs food to survive, but as a pet you can choose the food to give it. Why would you give it a food that could potentially be dangerous, when you could just give it normal feeders? Not worth it, any way you slice it.