02Return chicken to kettle; add chicken broth. Add all vegetables except zucchini. Simmer 20 minutes, uncovered. Add zucchini, simmer 5 minutes longer, skimming foam from top periodically.03Add rice, salt and pepper. Cook until chicken is tender, about 10 minutes.04Untruss chicken. Cut it into serving pieces, serve in four hot soup bowls with equal amounts of vegetables and rice in each bowl. Garnish with fresh chervil, serve.