Place 2 pounds boneless, chicken breasts into the bottom of the crock pot. Add the slices of ½ cup butter, on top of the chicken.
In a large bowl, add 4 cups chicken broth, 2 cans cream of chicken soup,1 teaspoon salt, 1 teaspoon pepper, ½ teaspoon garlic powder, ½ teaspoon onion powder, and 1 teaspoon dried Italian seasoning. Whisk to combine, then pour over the chicken and butter.
Cover and cook on low for 5-6 hours or high for 2-4 hours.
Shred the chicken using two forks, then add the shredded chicken and uncooked 8 ounces dry egg noodles to the crock pot.
Stir the noodles into the crock pot, then cover and continue cooking for 20-40 minutes or until the noodles are cooked, stirring occasionally. Add a small amount of broth or water if more liquid is needed to cover the noodles.