01 -
In a medium bowl, toss the chicken with 3 teaspoons of Cajun seasoning until evenly coated.
02 -
In a large skillet over medium heat, melt the butter. Add the seasoned chicken and cook for 5 to 7 minutes, flipping occasionally, until browned and fully cooked to an internal temperature of 165°F. Transfer the chicken to a plate and cover loosely with foil to keep warm.
03 -
In the same skillet over medium-high heat, pour in the chicken broth and heavy cream. Stir and scrape up any browned bits from the bottom of the pan using a spatula or wooden spoon.
04 -
Stir in the uncooked penne pasta. Bring the mixture to a boil, then reduce the heat to a gentle simmer. Cover and cook for 8 to 10 minutes, stirring frequently, until the pasta is tender and most of the liquid has been absorbed.
05 -
Stir in the ranch dressing, remaining ½ teaspoon of Cajun seasoning, salt, and pepper. Let it simmer for an additional minute to blend the flavors.
06 -
Remove the skillet from heat. Add the mozzarella and parmesan cheeses and stir until melted and the sauce is smooth and creamy.
07 -
Return the cooked chicken to the skillet and stir to combine.
08 -
Garnish with freshly chopped parsley and serve hot.