Heat a large high sided skillet, or dutch oven, over medium high heat. Add the chicken, tossing with the oil. Season with salt & pepper, to taste, and cook until the chicken's cooked through. Remove the chicken from the pan, and set aside.
3 tbsp extra virgin olive oil, 1-2 lbs boneless, skinless chicken breasts, chopped into 1/2" chunks, salt & pepper, to taste
Add the mushrooms & onion to the pan, tossing with the last tablespoon of oil. Stirring occasionally, cook until the mushrooms are done.
2 cups sliced baby bella mushrooms, washed, 1 medium white onion, diced
Add the chicken, broth, cream, wine, and pasta back to the skillet. Bring the mixture to a boil, reduce to a slow simmer and cover.
3 cups chicken broth, 1/2 cup heavy cream, 1 cup Marsala wine, 3 cups dry pasta
Continue simmering, stirring occasionally, for 15-20 minutes or until the pasta is cooked through.
Remove the skillet from heat, stir in the cheese, and serve immediately.
1 cup shredded Parmesan cheese