Gather all your ingredients to make the cooking process smoother.
Prepare the chicken by rinsing it under cold water and patting it dry.
Sauté the vegetables in olive oil for about 5 minutes until softened, then add garlic and herbs.
Transfer the sautéed mixture to the slow cooker, add chicken broth and chicken, and cook on low for 6 to 7 hours or high for 3 to 4 hours.
Shred the cooked chicken and return it to the slow cooker, mixing well.
Add egg noodles and cook on high for an additional 30 minutes, adding peas in the last 5 minutes.
Stir the soup, adjust seasoning if needed, and garnish with parsley before serving.