01 - Combine shredded chicken, mayonnaise, Greek yogurt, Dijon mustard, celery, red onion, dill, lemon juice, salt, and pepper in a medium mixing bowl. Mix thoroughly until all ingredients are fully incorporated and the mixture is creamy and well blended.
02 - Wash and thoroughly dry the cucumbers. Using a mandoline slicer or vegetable peeler, carefully slice the cucumbers lengthwise into long, thin ribbons. You will need approximately 16 even slices for rolling.
03 - Lay a cucumber ribbon flat on a clean work surface. Spread approximately 1 1/2 tablespoons of the chicken salad mixture along one end of the ribbon. Add a few julienned carrots on top if using for extra texture and color.
04 - Gently roll the cucumber ribbon from the filled end, tucking the filling inside as you roll. Place the completed roll seam side down on a serving platter to prevent unrolling.
05 - Continue the process with remaining cucumber ribbons and chicken salad until all ingredients are used. You should have approximately 16 roll ups.
06 - Serve immediately for optimal crispness. Alternatively, cover the platter and refrigerate for up to 2 hours before serving to maintain the best texture and flavor profile.