Brush both sides of the bread with the olive oil. Place on a baking sheet fitted with a rack. Bake until lightly toasted, 4 to 5 minutes. Let cool, then cut each slice into bite-size pieces.
Cut each slice of bacon into 4 pieces. Remove 12 nice leaves from the head of lettuce. Cut each lettuce leaf into 2 pieces. Skewer a piece of bread onto each of twenty-four 4-inch skewers. Carefully roll up the lettuce pieces and place one on each skewer, followed by a piece of bacon and a tomato. Serve with Green Goddess Dip.
Green Goddess Dip:
Combine the buttermilk, yogurt, basil, dill, parsley, tarragon, mustard and vinegar in a blender and blend for about 15 seconds. With the blender running, slowly drizzle in the neutral oil and extra-virgin olive oil until the mixture is emulsified. Season with salt and black pepper. Serve chilled.