1. Working in two batches if necessary, cook bacon in a large
skillet over medium heat until brown and crisp, 6 to 8 minutes per
side, transfer to a paper towel-lined plate to drain. Pour off all but
2 tablespoons rendered fat from skillet.
2. Season turkey generously with salt and pepper. Add to skillet,
and cook over medium heat until opaque throughout, 2 to 3 minutes per
side; transfer to a paper towel-lined plate to drain.
3. In a small bowl, mash avocado, lime juice, and jalapenos with a fork; season with salt and pepper.
4. Spread avocado mixture on one side of each slice of toast. Layer
turkey, bacon, tomato, and toast to form four triple-decker sandwiches.
To serve, skewer with toothpicks; slice in half with a serrated knife.