Start by melting a tablespoon of butter in a large skillet over medium heat. Add chicken breasts and cook until browned and cooked through, 5 to 7 minutes. Remove chicken.
Add a tablespoon of butter, then smoked sausage slices. Cook until crispy, 3 to 4 minutes.
Add mushrooms and cook until they soften and release their juices, about 5 minutes.
Add Cajun seasoning, Italian seasoning, garlic, and cook for another minute.
Pour in chicken broth and Worcestershire sauce, bring to a simmer.
Return chicken to skillet, stir to combine. Lower heat and add remaining tablespoon of butter.
Cook pasta separately until al dente, drain and add to skillet.
Sprinkle Parmesan cheese on top, stir to melt. Season to taste with salt.
Notes
Serve immediately while hot. Store leftovers in an airtight container.