Cat That Chew on Plastic

Have you ever had a kitty that is obsessed with chewing on plastic? I have one of those. Before we got him, I had never heard of a cat that would actually be addicted to eating something like this. And he won't stop either. I can try to get his attention or push him away from it and it's like he doesn't hear me.

He will also get into my plastic bags that I have put up high in the pantry and somehow he gets them down to chew on them. It's frustrating. I try to keep them up but he always seems to find them. They seem to magically appear out of nowhere.

Is this a normal thing with cats? None of my other cats have done this.