In a small bowl, whisk together chicken broth, Parmesan cheese, minced garlic, butter, Italian seasoning, salt, and pepper.
Pour the mixture over the chicken in the slow cooker.
Cover and cook on low for 3-4 hours or on high for 2-3 hours, until chicken is cooked through and tender.
Shred the chicken with two forks in the slow cooker. Stir to coat the shredded chicken in the sauce.
Serve hot, optionally over rice or pasta, and garnish with fresh parsley.
Notes
This recipe can also be made with chicken thighs. Adjust cooking time accordingly. For a thicker sauce, you can mix 1 tablespoon of cornstarch with 2 tablespoons of water and stir it into the sauce during the last 30 minutes of cooking.