I also made lemon zest for my sauteed spinach. What a wonderful smell. Just make sure to stop grating when you get to the white pith. The pith is very bitter and can be a bit overpowering.
Here is my glaze for the pork chops. I used brown sugar, rosemary, broth, orange juice, orange zest, crushed red pepper, salt and pepper to make it. Follow this link for the recipe. I just made spinach instead of the broccolini because it was more readily available.
Here is how I made my sauteed spinach: I sauteed garlic and onions in olive oil until golden. Then added I the spinach and cooked until wilted. I threw in the juice and zest of one lemon, salt and pepper to taste, and there you have it! It is a wonderful and easy side dish.