Make the Tzatziki Sauce: In a medium bowl, combine the Greek yogurt, grated cucumber, minced garlic, lemon juice, olive oil, chopped dill, salt, and pepper. Mix well and refrigerate for at least 30 minutes to allow the flavors to meld.
Prepare the Meatball Mixture: In a large mixing bowl, combine the ground chicken, breadcrumbs, Parmesan cheese, chopped dill, minced garlic, salt, pepper, lemon zest, and beaten egg. Mix until everything is evenly incorporated, but don’t overmix as this can make the meatballs tough.
Form the Meatballs: Using your hands, shape the mixture into meatballs roughly 1 to 1.5 inches in diameter. Place them on a plate or baking sheet as you finish shaping them.
Cook the Meatballs: Heat olive oil in a large skillet over medium heat. Once hot, add the meatballs in batches to avoid overcrowding. Cook for about 6-8 minutes, turning occasionally, until they are golden brown and cooked through (internal temperature should reach 165°F).
Serve: Arrange the cooked meatballs on a platter and serve warm with the chilled tzatziki sauce on the side for dipping.
Notes
Allow the tzatziki sauce to chill for at least 30 minutes for best flavor.