1-First, in a medium bowl, thoroughly combine the Greek yogurt, grated cucumber (after squeezing out excess moisture), lemon juice, grated garlic, chopped dill, chopped parsley, sea salt, and black pepper to form the tzatziki base.

2-Next, add the cooked chicken, diced cucumber, diced celery, diced red onion, and crumbled feta cheese to the bowl with the tzatziki mixture.

3-Then, mix until all ingredients are evenly coated, ensuring every bite is full of flavor and texture.

4-Adjust seasoning with additional lemon juice, salt, or pepper if desired to personalize the taste.

5-Finally, chill the salad in the refrigerator for at least 30 minutes to let the flavors meld, then serve it chilled over greens, in pita pockets, with pita chips, in lettuce cups, or as a sandwich filling, with optional toppings like chopped tomatoes, kalamata olives, extra feta, or herbs.