Preheat oven to 350 degrees. Grease a pie dish or 1-quart casserole and set aside.
In a medium skillet, cook bacon until it is crispy. Remove to paper towels to drain and cool. Once cool, crumble into smaller pieces.
Leave about 1 tablespoon of the bacon grease in the skillet, and add the shrimp. Fry until just starting to turn pink, turning once to make sure both sides turn pink. Remove to paper towel to cool. Once cool, cut each large shrimp in 3-4 bite-size pieces.
In a large bowl, add cream cheese, sour cream, mayonnaise, lemon juice, Worcestershire sauce, mustard and garlic powder. Stir until well combined. Add milk and stir until creamy and no lumps remain.
Add 1/4 cup shredded cheese, crumbled bacon and shrimp pieces. Fold until it is all incorporated. Transfer to greased baking dish. Sprinkle remaining 1/4 cup cheese on top.
Bake for 30 minutes or until it is heated through and the cheese on top is melted. Serve hot.