Preheat grill to high heat. Lightly oil grate. Grill chicken 8-9 min. per side or until juices run clear. Remove from heat and cool. Slice diagonaly into strips when cool. Combine red wine vinegar, sugar, oil, onion, mustard,salt and pepper in food processor and process until smooth. Arrange lettuce on serving plates, top with grilled chicken and pecans. Sprinkle dried cranberries or pineapple chunks on top. Drizzle with dressing to serve.