Mama's Chicken Soup

Serve homemade chicken soup in less than an hour.

1 tablespoon olive oil
1 parsnip, halved lengthwise and cut into 1/4-inch slices
2 carrots, halved lengthwise and cut into 1/4-inch slices
2 celery ribs and leaves, chopped
1 large onion, chopped (about 1 1/2 cups)
1 garlic clove, minced
1 teaspoon salt
1/4 teaspoon freshly ground pepper
8 cups low-sodium chicken broth
3 skinned bone-in chicken breast halves (about 2 1/2 to 3 pounds)
2 tablespoons fresh lemon juice

Heat oil in a large pot. Add parsnip and next 6 ingredients, and sauté about 5 minutes. Add broth and chicken, and bring to a boil. Reduce heat, and simmer 35 minutes. Remove chicken from bone, and cut meat into bite-size pieces. Return chicken to pot, add lemon juice, and heat through.