To make this chicken salad, start with the tzatziki. In a medium bowl, combine the Greek yogurt, grated cucumbers, mashed garlic, lemon juice, mint, dill, and kosher salt. Stir until everything is well blended, then set it aside to let the flavors mingle while you put the salad together.
Next, build the salad. In a large bowl, add the shredded chicken, chopped cucumbers, kalamata olives, red onion, and feta if you're using it. Give it a quick toss so everything is evenly distributed.
Finally, pour the tzatziki over the chicken mixture and toss to coat everything really well. Taste, adjust the salt if needed, and serve. Eat it straight from the bowl, spoon it over romaine, or scoop it onto your favorite crackers.
