Preheat the oven to 450 degrees F (see notes to make this recipe on the grill). Line a large sheet pan or pizza pan with parchment . Stretch pizza dough to fit size of the pan and coat with 2 TBS olive oil, to cover. Spread fig jam on top and add pieces of goat cheese evenly across the surface (or dollops of cashew cheese, if using).
Bake for 15 minutes, until cheese is melted/brown and crust is golden.
While pizza is baking, add arugula to a large bowl and toss with ¾ TBS olive oil, 1 tsp lemon juice, and a pinch of salt.
Remove pizza from oven and top with arugula salad. Drizzle a small amount of truffle oil over the entire pizza and serve hot alongside crushed red pepper flakes and parmesan.