Heat a large skillet over medium-high heat. Add bacon and cook until crispy. Once done, use a slotted spoon to transfer the bacon onto a plate.
After the bacon has been removed, quickly add apple cider vinegar, water, Swerve, salt, and pepper to the hot bacon drippings. Combine the ingredients until everything is dissolved.
As soon as the dressing is combined, into a salad bowl, add chopped romaine. Crumble cooked bacon and toss. Then, pour hot dressing on top and gently toss to ensure every lettuce leaf is coated with the dressing. Add salt and pepper to taste and diced hard-boiled egg if desired.