Preheat the oven to 450 degrees F. Rinse the zucchini and pat it dry with paper towels. Slice off and discard the ends. Use a chef's knife to cut the zucchini into rounds ½-inch thick.
Place the zucchini rounds in a large mixing bowl.
In a small bowl, add the Parmesan cheese, paprika, garlic powder and salt. Stir with a spoon or whisk to combine.
Drizzle the olive oil onto the zucchini and gently mix it with your hands. Add the cheese mixture to the bowl of zucchini and mix with your hands to combine.
Transfer the Parmesan zucchini slices to a half sheet pan in a single layer. Pick up any cheese that falls onto the pan and place it on top of the zucchini rounds.
Bake at 450 degrees F for five minutes, then broil on high for two or three minutes, until the cheese is browned and the zucchini is tender. Squeeze some lemon juice on top and serve.
Store leftovers in a sealed container in the refrigerator for up to four days.
Notes
Two medium zucchini sliced into ½-inch thick rounds should fit in one sheet pan. If you make three zucchini, you'll need a second pan.The leftovers are delicious eaten cold out of the refrigerator as a snack or added to salads. They will still have a slight crunch. If you warm them up, the zucchini will soften a bit. If you want to make these in the air fryer, try cooking them in a single layer at 400 degrees F for 10 minutes.