- In a bowl, combine all the ingredients. Season with salt and pepper. Set aside.
- With the rack in the middle position, preheat the oven to 200 °C (400 °F). Line a baking sheet with parchment paper.
- Spread the pancetta slices on the baking sheet. Bake for about 15 minutes or until crisp. Drain on paper towel. Set aside.
- Spread the inside of the bread slices with olive mayonnaise. Layer the turkey and tomato on four slices of bread. Cover with a second slice of bread. Layer with lettuce and pancetta. Cover with the remaining bread. Insert four toothpicks in each sandwich and cut into quarters.