1Cook orzo in pot of boiling salted water until just tender. 2Drain well. 3Heat oil in large saucepan over medium heat. 4Add onion, garlic, and chiles. 5saute until onion begins to brown, about 4 minutes. 6Add chicken; saute 1 minute. 7Add broth, lime juice, and tomato. 8Simmer until chicken is cooked through, about 3 minutes. 9Mix in orzo, then chopped cilantro. 10Season soup with salt and pepper. 11Ladle soup into 4 bowls. 12Garnish with cilantro sprigs.