Place chicken breasts into the crock pot and season with Italian seasoning, garlic powder, salt, and pepper.
Add diced tomatoes and chicken broth over the chicken. Give it a gentle stir.
Top with cubed cream cheese and parmesan cheese—no need to stir it in yet.
Cover and cook on low for 4 hours or until chicken is tender and fully cooked.
Once cooked, shred the chicken with two forks directly in the crock pot.
Cook pasta according to package instructions. Drain and add it to the crock pot.
Stir everything together until the sauce is creamy and coats the pasta evenly.
Garnish with fresh parsley if you’re feeling fancy. Serve hot and enjoy!