Preheat your oven to 375°F.
In a medium bowl, mix together the softened cream cheese, sour cream, cooked sausage, diced peppers, pepperoni, garlic powder, and Italian seasoning.
Spread the mixture evenly into a greased pie plate or small baking dish.
Layer the pizza sauce over the cream cheese mixture, then generously sprinkle mozzarella cheese on top.
Add extra toppings like more pepperoni slices or crumbled sausage, but avoid too many to prevent excessive grease.
Bake for 15-20 minutes, until the edges are bubbly and the cheese is perfectly melted.
Garnish with Parmesan cheese and red pepper flakes, if desired.
Serve warm with toasted baguette slices, pita chips, or crackers.