Crockpot Chicken Noodle Soup

Ingredients - 
  
1 large Onion, sliced
2 Carrot, sliced
2 Celery Stalks, sliced
4 ounces Mushrooms
2 teaspoons Salt
1/2 teaspoon Pepper
1/4 teaspoon Thyme
1 tablespoon Parsley
10 ounces Peas, frozen
3 Chicken Breasts
5 cups Water
3 cups Noodles 
  
Preparation: 
  
Place all ingredients in crockpot, except noodles, in order listed. 
Cover and cook on LOW 8 hours (HIGH 4 hours). 
Add noodles. 
Cook on HIGH another 1/2 to one hour until noodles are cooked.