Grease a pizza stone or large cookie sheet lightly with oil. Lay the whole-wheat pizza crust on it. Brush it with olive oil generously (or the crust will become soggy from the sauce).
Spread the pizza sauce on the prepped crust and sprinkle the cheese.
Arrange the grilled chicken slices and throw in the spinach+arugula.
Bake for 5 to 6 minutes (or according to package instructions) till the cheese melts.
Sprinkle the parmesan cheese on top, slice and serve.