Heat gas or charcoal grill. Cut 12x8-inch sheet of heavy-duty foil; spray with cooking spray.
Unroll dough; place on sprayed foil. Starting at center, press out dough with hands to form 13x9-inch rectangle. Brush dough with 1 teaspoon of the olive oil.
Carefully brush canola oil on grill rack. Invert dough onto grill rack over medium-low heat; peel off foil. Cook 3 to 5 minutes or until bottom of dough is golden brown.
Turn dough; grill 1 to 2 minutes or until bottom is set but not brown. Carefully remove crust from grill. Spread remaining olive oil and the pizza sauce over dough. Sprinkle with garlic powder, basil and cheeses.
Return pizza to grill over indirect heat. Close grill; cook 3 to 5 minutes or until cheese is melted. Cool slightly before cutting into pieces.