Preheat oven to 450 degrees F. Preheat pizza stone or baking sheet in oven.
Sprinkle pastry sheet or large cutting board with cornmeal. Roll out the dough to roughly a 12" circle. Brush with truffle oil.
Spread yogurt cheese onto pizza shell using a knife or frosting spatula. Sprinkle with champagne grapes, followed by the gorgonzola crumbles, pine nuts, thyme and lemon zest. Carefully transfer to pizza stone or baking sheet.
Bake for 30 minutes or until pizza crust is lightly browned.
Remove from oven. Let the pizza set for 5 minutes before cutting.