Broiled Wedge Salad

Name: Broiled Wedge Salad
Ingredients: 1 cup cherry tomatoes (8 ounces); 1 small shallot; 2 tablespoons finely chopped fresh chives; 1 1/2 ounces Parmesan cheese, finely grated (about 1/2 cup); 1 medium lemon; 1 cup crumbled blue cheese (about 4 ounces), divided; 1/4 cup full-fat sour cream; 1/4 cup mayonnaise; 2 tablespoons olive oil; 1 teaspoon Dijon mustard; 1/2 teaspoon kosher salt; 1/2 teaspoon freshly ground black pepper, plus more for serving; 4 slices bacon (about 4 ounces); 1 medium head iceberg lettuce (about 18 ounces)