Start by letting your pizza dough come to room temperature if it's been refrigerated. Lightly dust your work surface with 1 tsp of flour to prevent sticking.
Using a rolling pin, gently roll out the dough into a circular shape, about 12 inches in diameter.
Preheat your Traeger grill to 450°F. This high heat is crucial for achieving that crispy crust.
Drizzle ½ tsp of olive oil over the stretched dough. Sprinkle with 1 tsp of garlic salt. Spread 1 cup of pizza sauce evenly over the dough.
Sprinkle 4 oz mozzarella cheese and 4 oz cheddar cheese over the sauce. Layer on the 1 cup of diced tri tip, followed by the ½ cup of diced onion and 1 medium red pepper. Sprinkle 1 tsp of BBQ rub over the top.
Carefully transfer the pizza onto the preheated pizza stone or baking sheet. Close the grill lid and cook for about 12-15 minutes.
Once cooked, remove the pizza from the grill. Drizzle ½ cup of BBQ sauce over the top and garnish with 2 tbsp of fresh cilantro.
