Steps
In a bowl, combine the shredded chicken, mayonnaise, lemon juice, salt, and pepper. Mix well until the chicken is evenly coated.
Lay the whole wheat tortilla flat and layer the lettuce, cucumber, and avocado slices in the center.
Spoon the creamy chicken mixture on top of the vegetables.
Fold the sides of the tortilla inwards and then roll it up tightly from the bottom to secure the filling.
Slice in half and serve immediately.