Fry the bacon in a skillet until crisp, about 7 minutes. Drain on a paper towel. Chop into small pieces.
Arrange the chopped iceberg on a small platter, then sprinkle over the grated mozzarella and chopped bacon. Drizzle with the Italian Ranch Dressing and finish with the pepper.
Italian Ranch Dressing:
Combine the mayonnaise, sour cream, milk, Parmesan, pesto, sun-dried tomatoes, salt, pepper and lemon zest and juice in a food processor. Process until well combined.