Arrange tomato slices in a large shallow dish. Combine lemon juice and next 5 ingredients; pour over tomato slices, turning to coat. Cover and marinate in refrigerator at least 2 hours.
Arrange tomato slices evenly on 8 lettuce-lined salad plates, if desired. Spoon marinade evenly over tomato slices.
All-New Complete Step-by-Step Diabetic