In 8-inch skillet, heat oil over medium heat. Add shrimp and bell pepper; sprinkle with garlic salt and pepper. Cook shrimp 2 minutes on each side until pink. Remove from heat.
Unroll dough onto un-greased cookie sheet or pizza pan. Bake 5 minutes.
Remove partially baked crust from oven. Top crust with Alfredo sauce, spinach, shrimp mixture and cheese.
Bake 8 to 12 minutes longer or until cheese is melted and crust is browned. Cut and serve.