[Quiet Man Cometh]

If Zeke is in the habit of chewing plastic before he eats, it could be that his stomach is bothering him in some way. I've heard of things like cat grass that might help for that, or at least give him something more attractive to chew on than plastic.

Unfortunately, quality pet food can generally be related to price, but there are little things you can do to help thing along. I know more about dogs than cats, but some research might find things for you. For instance, my dog needed more fibre in his diet but the food the vet wanted me to use was higher fibre but not nutritional enough. He'd need to eat all day to keep his weight up. On the other hand, a spoonful of plain pumkpin or sweet potato on his regular kibble would accomplish the same thing and be cheaper.

Just some thoughts.