In a large skillet over medium-high heat, brown chicken in oil. Transfer to a 5-qt. slow cooker; add the onion, carrots, celery and corn., In a large bowl, whisk the soup, broth and dill until blended; stir into slow cooker. Cover and cook on low until chicken and vegetables are tender, about 4 hours ., Stir in peas and cream. Cover and cook until heated through, about 30 minutes longer.