Mix spices in large plastic bag. Brush chicken with oil; place in bag, and turn to coat. Grill chicken until cooked thoroughly.
1 cup plain yogurt
1/4 c cucumber, finely chopped
1/2 cup tomato, chopped and seeded
1/4 cup red onion, minced
2 Tbls fresh mint, chopped
1 tsp ground cumin
1/4 tsp salt
Combine all ingredients in bowl; cover and refrigerate till ready to serve.