Add the chicken to the slow cooker, and sprinkle over the seasonings.
Add the marinara sauce and alfredo sauce.
Place the lid on the slow cooker and cook on LOW for 6-7 hours
When the cooking time is up, start cooking your pasta on the stove-top according to package directions. You can cook it to your liking - I usually do a little longer than al dente.
Drain the pasta and add it to the sauce along with the parmesan cheese.
Stir and serve!
Video
Notes
Don't skip cooking the pasta on the stove top - you'll have much better results.You can change up the pasta shape; we recommend bow-tie, rigatoni, or cavatappi. Egg noodles aren't recommended as a substitute for penne; they will fall apart too much.