In a large bowl whisk the eggs and milk. In another large bowl add the flour, cornstarch, and black pepper. Mix until combined.
Cut each strip of bacon in half. Work with 1 piece of bacon at a time place it in the flour mixture, turn to coat. Then, place the bacon into the egg mixture, turning to coat. Finally, place it back in the flour and turn to coat. Place the bacon on a plate and repeat steps with the remaining pieces.
Use a dutch oven or a deep pot filled with 2 inches of oil (about 4 cups). Preheat the oil to 375 degrees cook the coated bacon for 4-5 minutes. Lay the cooked bacon on a cookie sheet lined with a paper towel to catch any excess oil.
Toast the bread and spread the chipotle mayo on both slices. On one slice of bread, add the lettuce, tomato, and a few pieces of bacon. Top with the other slice cut it in half and enjoy!