yogurt chicken breast

4 chicken breasts
1/2 c plain yogurt
1 tsp. dried oregano leaves
1 chopped scallion
2 tbsp.evoo
1 tbsp. white vinegar
3/4 tsp. salt
mix all ingredients except chicken together add chicken and let marinate place pieces on rack of broiler pan and place on highest position under broiler broil 5 mins turn chicken over and brush with remaining sauce broil 3 more mins until lightly browned