Cook ground beef and taco seasoning mix according to package directions; drain, if necessary. Set aside.
Roll each piece of dough into a 1/4-inch-thick round on a lightly floured surface. Brush 1 side of each round with olive oil, and place, oiled side down, on a grill rack.
Grill, without grill lid, over medium-high heat (350° to 400°) 2 to 3 minutes or until light grill marks appear on bottoms. Brush tops with oil; turn. Spread with desired sauce, and add ground beef mixture. Sprinkle with desired toppings, and cook until cheese melts.
* 1 (25-ounce) package frozen bread dough, thawed, may be substituted to make larger pizzas. Cut each loaf in half. Roll each portion into a 1/4-inch-thick round, and grill as directed.