Steps
1. Begin by washing and thoroughly drying the romaine lettuce leaf.
2. In a bowl, combine the shredded chicken, diced tomatoes, red onion, cilantro, lime juice, salt, and pepper.
3. Place the mixture onto the center of the lettuce leaf.
4. Top with avocado slices and salsa if desired.
5. Fold the lettuce leaf over the filling to create a taco shape.
6. Enjoy your fresh and healthy lettuce-wrapped chicken taco!