1. Prepare rice according to package directions. Spread rice in a shallow pan; place in freezer 8 to 10 minutes.
2. While rice chills, combine yogurt, curry powder, and salt in a large bowl. Add chicken and next 3 ingredients to yogurt mixture, stirring until coated.
3. Stir chilled rice into chicken mixture. Spoon chicken salad onto lettuce leaves, if desired.