Preheat the oven to 375°F (190°C).
In a mixing bowl, combine cream cheese, milk, garlic powder, paprika, salt, and pepper until smooth. Stir in the shrimp, onions, and bell peppers.
Pour the shrimp mixture into the pie crust.
Sprinkle shredded cheddar cheese on top.
Bake for 30-35 minutes or until the crust is golden and the filling is set.
Let cool for a few minutes before serving. Enjoy with a fresh salad or garlic bread.