Preheat your grill (or oven) and pizza stone, if using to 450F.
Roll pizza dough out, and spread pizza sauce. Top with cheese, pineapple, prosciutto, red onion and jalapenos (if using).
Once grill or oven is hot, bake for 5-7 minutes, or until cheese bubbles/crust is browned.
Remove from heat, and top with arugula, if desired. Cut and serve!