What is the cure for my one side that can not chew?

That would depend: On the cause. If its your teeth, u need a dentist. If it is one sided weakness in the jaw, start with your pcp. It's a tough question because you didn't state if this is new and that has several possible etiologies. Good luck.

Physics in the mouth: There are many possible answers to this question. The short answer is that your teeth may not be coming together properly. There are also many reasons for this. The joint where your jaw bone connects to your skull may be the culprit. It could be inflamed or have an anatomical issue. A good dentist would be a great place to start.