Cook bacon until crispy. You can do this in a skillet on the stovetop or in the microwave according to package instructions. Once cooked, transfer bacon to a paper towel-lined plate to drain excess grease.
Cut the avocado in half, remove the pit, and slice the flesh. Slice the tomato into thin slices.
Lightly toast sandwich bread.
Spread a layer of mayo or quick aioli on one side of each slice of bread.
On one slice of bread, layer lettuce leaves followed by tomato slices. Add the ButcherBox's Fully Cooked Organic Free-Range Grilled Chicken Breast on top of the tomato slices. Place the slices of crispy bacon on top of the chicken. Finally, layer avocado slices on top of the bacon. Season with salt and pepper to taste.
Top with the remaining slice of bread.
Serve immediately. Enjoy it as is or pair it with a side of chips, fries, or a salad for a complete meal.