Preheat the oven to 400 degrees Fahrenheit (205 degrees Celsius). In a small bowl, blend together the softened cream cheese, 1-½ cups of Italian cheese blend, the Italian seasoning and the garlic powder, until fully combined.
Spread the cream cheese mixture evenly into the bottom of an 8-inch cast iron skillet (or another similar-sized baking dish). Pour the pizza sauce over the cheese layer, and spread it out evenly to the sides of the pan. Top with the remaining 1 cup of Italian cheese, the pepperoni slices, sausage, green pepper, olives and red onion.
Bake for 20 minutes, or until the cheese has melted and bubbling. Allow to cool slightly, then serve and enjoy with your Garlic Parmesan Pretzel Crisps!
