Start by grating 1 medium cucumber into a bowl. Wrap the grated cucumber in a paper towel and squeeze out any excess moisture until dry.

In a mixing bowl, combine the squeezed cucumber with 1 cup of plain Greek yogurt, 2 tablespoons of fresh dill, juice of half a lemon, 1 minced garlic clove, and a pinch of salt and pepper. Stir well for about 1-2 minutes.

Shred 2 cups of cooked rotisserie chicken and add it to the tzatziki sauce mixture, along with ¼ cup of diced red onion. Gently fold until evenly coated.

Serve the Tzatziki Chicken Salad in pita bread, over a bed of lettuce, or with crackers on the side. Enjoy it cold or store in the refrigerator.