Heat oven to 400°F for dark or nonstick pan (425°F for all other pans). Spray 15x10-inch pan with sides with cooking spray.
Heat 10-inch skillet over medium heat. Add oil and onion; cook about 5 minutes, stirring occasionally, until onion is softened and starting to brown. Reserve 1/2 cup pear. Stir remaining pear into onion. Cook 2 minutes, stirring frequently.
Unroll dough in pan; starting at center, press dough into 15x10-inch rectangle. Bake about 8 minutes or until light brown.
Evenly top crust with provolone cheese. Top with pear mixture and Gorgonzola cheese.
Bake 8 to 10 minutes longer or until crust is golden brown and cheese is melted. Top with spinach and reserved 1/2 cup pear slices. To serve, cut into 6 rows by 3 rows.