1. Remove chicken meat from bones. Tear into long strips about 1/2- inch wide; discard skin. In a large bowl, combine chicken with walnuts, celery, scallions, and golden raisins.
2. In a small bowl, combine olive oil, vinegar, salt, and pepper. Beat with a fork to blend. Pour dressing over chicken salad and toss to coat.
3. Add lettuce to salad bowl and toss again to dress leaves.