Put a skillet on at medium high and swirl in enough olive oil to cover the bottom.
Rinse off the zucchini and slice it into about half inch thick slices. Cut the onion into strips. Add the zucchini and onion to the skillet. Salt and pepper. Toss or stir as they cook.
Chop up the garlic.
When the zucchini and the onion have started to brown push them to the outside of the skillet and add the shrimp and the garlic. Squeeze in the lemon juice and toss in the rind.
Cook the shrimp until it is pink on one side and then pink on the other and opaque in the middle. Enjoy!