In a large pan over medium heat, combine cubed cream cheese, buffalo sauce, and chicken broth. Whisk until the mixture is creamy.

Stir in paprika, garlic powder, black pepper, and salt.

Mix in the blue cheese or ranch dressing and shredded chicken, and let the sauce simmer on low heat for 10 minutes.

While the sauce simmers, boil a large pot of water and cook the penne pasta according to the package directions.

Drain the pasta and add it to the sauce, tossing to coat evenly.

Serve the pasta topped with diced green onions and a sprinkle of red pepper flakes, if desired.