Brush top of pizza shell with oil (use more or less as required).
Combine cheese and basil; sprinkle over pizza shell. Sprinkle with pepper (use less if serving to kids as it makes it spicy). Place pizza shell on a greased pizza pan or directly on grill. Bake, with lid down, over low heat on natural gas BBQ for 10-12 minutes or until cheese is melted. Slice and serve. Can also be baked in oven (350F) until cheese is melted.
If using fresh pizza dough roll or stretch out to shape flatbread (perfection not required). Drizzle olive oil on one side and place olive oil side down on medium-high grill. Close the lid and cook until the bottom of crust is golden brown, for 2 to 3 minutes. Brush olive oil on the top side of the flatbread and flip over closing lid to cook 2-3 minutes. Move to other side of bbq and allow to cook inside over indirect heat.