Wash the three large lettuce leaves thoroughly under cold running water and pat them dry carefully with a piece of paper towel. Make sure the leaves remain intact. Cut the smoked chicken fillet into equal strips and cut the half avocado into thin, elongated slices.
Lay the dry lettuce leaves flat before you on a spacious cutting board or directly on the counter. Distribute the strips of smoked chicken fillet evenly along the length of the center of each leaf. Next, place the avocado slices neatly on top of the chicken.
Sprinkle the chicken and avocado with a dash of lemon juice. This gives the whole thing a fresh taste and at the same time prevents the avocado from turning brown. Then sprinkle the tablespoon of pumpkin seeds evenly over the filling for a crunchy bite.
Fold the sturdy bottom of the lettuce leaves slightly inward over the filling and then roll the leaf lengthwise firmly. Serve the wraps immediately, optionally secured with a wooden pick to prevent them from opening during eating.