Spread 1 tablespoon pesto sauce over the grilled side of each pizza crust. Top with 5 to 6 tomato slices and 1/4 cup cheese. Repeat with remaining pizzas. Carefully slide each pizza onto the grill.
Lay round on a lightly floured surface or pizza peel. Season with a thin drizzle of oil and salt. Swirl ½ cup of tomato sauce across the pizza, leaving a 1-inch edge untouched. Season with a bit ...