Prepare the zucchini: Wash the zucchini and slice into 1/4-inch thick rounds. Sprinkle with salt and pepper.
Cook the zucchini: Heat olive oil in a large skillet over medium heat. Add zucchini slices and cook for 2-3 minutes per side, or until golden brown and tender.
Add the cheese: Reduce heat to low. Sprinkle mozzarella and Parmesan cheese over zucchini rounds. Cover and cook for 1-2 minutes, or until cheese is melted and bubbly.
Serve: Transfer zucchini rounds to a serving platter and garnish with chopped fresh parsley. Serve immediately.

Enjoy!