I also use the gas side of my grill and put the bread sticks on the top rack.
For Gas Grills: Set grill for medium direct heat (all burners on; medium-low setting; 400 degrees F)*
For Charcoal grills: Place 25-30 briquettes on the outside of the grill to create indirect heat.*
Pre-heat grill with lid closed for 8-10 minutes.
Open grill lid and place an oven thermometer probe on the inside of the grill leaving the bulb indicator on the outside and close lid to verify that the grill temperature is at a minimum of 400 degrees F.
Open frozen pizza and remove all packaging materials.
When grill is at the proper pre-heated temperature place frozen pizza directly in the center of the grill rack and close lid. (If using charcoal grill - Don't place your pizza directly above the briquettes-it will burn!)
Grill according to 1st cook in the grill time table.
Open lid and turn pizza 90 degrees (one quarter turn) and place back on main grill rack and close lid.
Grill according to 2nd cook in the grill time table.