Step 1: Prepare Bacon - Cook bacon over medium heat until crispy, about 6-8 minutes. Transfer to paper towels to drain.

Step 2: Slice Tomatoes - Wash and slice green tomatoes into 1/4 to 1/3 inch thick slices. Lay on paper towel to absorb moisture.

Step 3: Make Egg Wash - Whisk together egg and milk in a shallow bowl until blended and frothy.

Step 4: Prepare Breading - Combine cornmeal, flour, salt, cayenne pepper, and sugar in another shallow bowl.

Step 5: Heat Oil - Pour enough oil to cover the bottom of a skillet and heat to 350°F.

Step 6: Bread Tomatoes - Dip tomato slices in egg wash, then coat with cornmeal mixture. Ensure each slice is well-covered.

Step 7: Fry Tomatoes - Fry breaded slices in hot oil for 3-4 minutes per side until golden brown. Drain on paper towels.

Step 8: Make Sauce - Mix mayonnaise with desired spices until well combined.

Step 9: Assemble Sandwich - Toast bread, spread mayo on both sides, layer with lettuce, fried tomatoes, and bacon.