Cook bacon in a skillet over medium heat until crisp; drain on paper towels and set aside. Combine mayonnaise, ketchup, lemon juice, TABASCO® Habanero Sauce, and salt in a small bowl and mix well.
Spread about 1 tablespoon sauce on each of 4 pieces of bread. Top each with 3 slices bacon and 1/4 of the avocado, tomato, and lettuce. Top with remaining bread slices, secure with toothpicks, and cut sandwiches in half.
Makes 4 servings.