Prepare Alfredo sauce according to package directions. Set aside.
Peel shrimp, and devein, if desired. Set aside.
Cook bacon in a nonstick skillet until crisp; remove bacon, reserving drippings in skillet. Drain bacon on paper towels; crumble and set aside.
Add onion and garlic to skillet, and sauté over medium-high heat 3 minutes or until tender. Add shrimp, and sauté 2 minutes. Stir in oregano and pepper. Remove from heat.
Place crust on a baking sheet; spread with Alfredo sauce. Sprinkle evenly with shrimp mixture, bacon, Parmesan cheese, and remaining ingredients.
Bake at 400° for 12 minutes or until cheese is melted. Let stand 5 minutes before serving.
Note: For testing purposes only, we used Boboli for prebaked Italian pizza crust.