Preheat the oven to 450 degrees F. Let the pizza dough rest according to package directions.
Press the dough into a 16-inch pizza pan or a rimmed baking sheet. Bake for 5 minutes.
In a large skillet, combine the bell peppers and onions. Cook over medium heat until the vegetables are tender, about 8 minutes. Remove from the heat. Next, add the ground beef and cook until crumbly and brown. Remove from the heat and drain well.
Spread the mustard over the pizza crust. Top with the provolone, beef mixture and mozzarella. Sprinkle with the Montreal steak seasoning. Bake until the crust is browned and the cheese melts, about 10 minutes. Cut into wedges to serve.
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