Scoop the avocado into a small bowl and, using a fork, mash with the yogurt, lemon zest, lemon juice, salt to taste, and a generous amount of black pepper. Stir in the minced chives and blend until the dressing is very smooth and spreadable.
Place a lettuce leaf on a work surface. Using one-fourth each of the turkey, cheese, and avocado mixture (about 2 tablespoons), place alternating slices of cheese and turkey on the leaf, spreading avocado mixture between layers as you go. Roll up the leaf and tie closed with a blanched chive, if using.
Make 7bmore roll-ups using the remaining ingredients.
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