Grilled Pizza with Pesto and Mozzarella

inch pre-cooked 12- whole wheat pizza crust (such as Trader Joe's)

basil pesto (store-bought or homemade)

part-skim fresh mozzarella (sliced in 1/2 in. pieces)

baby arugula

zest and juice of lemon

olive oil

salt and pepper

grated parmesan cheese and red chili flakes (garnish)