Mix the lemon juice, olive oil, Parmesan, salt and pepper together for the dressing. I like to use a small jar so I can just shake dressing to mix it. Leftovers can easily go in the fridge that way.
Thinly slice the zucchini at an angle or use a mandoline.
Put the zucchini, arugula and basil in a small bowl and mix just enough of the dressing in to coat thinly and serve.