Prepare pizza as desired and place onto a well-greased metal pizza pan. Set brick(s) onto barbecue grid. Preheat natural gas barbecue to medium heat or 425°F (220°C) on heat indicator. Place pizza pan on brick to increase distance of pan from heat and prevent overbrowning of crust. Cook with lid closed for approximately 20 - 30 minutes or until crust is browned and cheese is bubbly and lightly browned. Turning pan may be necessary so that pizza browns evenly. If necessary, cover loosely with foil to prevent cheese from overbrowning.