Season chicken with salt and pepper.
Using your largest skillet with a lid, add olive oil and chicken. Brown the chicken over medium-high heat. Once the chicken is cooked through, add sausage and continue to cook for 3-4 minutes.
Add in garlic and cook for an additional 1-2 minutes.
Add pasta, chicken broth, heavy cream, and Cajun seasoning. Stir all ingredients and bring to a simmer over medium-high heat.
Reduce the heat to low, close the skillet, and cook for 15-20 minutes or until pasta is al dente.
Remove the skillet from the heat and stir in shredded Parmesan cheese. Garnish with parsley and additional Parmesan to taste.