I do some part time work in a pizza shop and I can give you a tip.
Make some pizza dough, roll it, or stretch it to fit your pan. Do not put any toppings on the dough, just bake half way in a hot over 485F (10 min or less).
You can then freeze it for later use, or top it and put it on your smoker. Before you use the pizza round, defrost it, and give it light coat of olive oil. I just drizzle the oil and use my hand to rub it over the pizza round.
Keep in mind that the more toppings, the longer it takes to cook, so you need to find a happy balance. Or partially cook the whole thing in an oven before smoking.
I have also seen pizza rounds partially cooked in supermarkets.