30 calories per serving. Light Italian dressing contains 30 calories and 2 g fat per serving. 70% less fat and 55% fewer calories than regular Italian dressing. See nutrition facts for sodium content. Regular Italian dressing contains 70 calories and 7 g sat fat per serving. Italian kitchen. This light recipe provides most of the flavor of our signature salad dressing with less fat and calories. Also great as a dip for vegetables. Questions or comments? www.olivegarden.com.