Pulled Pork Mac n Cheese

Name: Pulled Pork Mac n Cheese
Ingredients: 1 16 ounce bag of fusili noodles or elbow macaroni; 3-3 1/2 cups extra sharp cheddar cheese ((grated)); 1 1/2 cups whole milk; 1/4 cup Parmesan cheese ((shredded)); 3 tablespoons butter; 2 tablespoons flour; 1 teaspoon mustard powder; 1/2 teaspoon sea salt; 1/2 teaspoon black pepper; 1/2 teaspoon onion powder; 1/2 teaspoon paprika; 1/4 teaspoon allspice; For topping:; 2-3 cups pulled pork; 1/2 cup barbecue sauce ((optional)); 1/3 cup shredded cheddar ((optional)); 1/4 cup flat leaf parsley, chopped