1/4 cup mayonnaise
2 tablespoons plain yogurt
1 teaspoon chopped fresh chives
1 teaspoon fresh lemon juice
1/2 teaspoon Dijon mustard
Kosher salt and freshly ground black pepper
3 ounces pancetta, cut into small dice
1/2 cup cherry tomatoes, halved
2 tablespoons extra-virgin olive oil
1 tablespoon chopped fresh chives
1 teaspoon red wine vinegar
Sea salt and freshly ground black pepper
2 to 3 heads Little Gem lettuce (about 16 leaves)
1/4 cup grated Parmesan