Preheat oven to 400F.
Lightly grease a 9x13 baking dish with cooking spray and set aside.
In a large mixing bowl, combine chicken, panko bread crumbs, garlic, onion, thyme, oregano, garlic powder, salt and pepper; mix and stir until thoroughly combined.
Form the mixture into 1-1/2 inch meatballs.
Transfer the meatballs to previously prepared baking sheet.
Bake for 18 to 20 minutes, or until meatballs are cooked through.
In the meantime prepare the yogurt sauce.
In a small mixing bowl, combine garlic, salt, ground pepper, dill, yogurt, and olive oil; mix until thoroughly incorporated.
Taste for seasonings and adjust accordingly. I always find that it needs a tad bit more salt.
Remove chicken meatballs from the oven and let stand couple minutes.
Transfer to a serving bowl and top spoon yogurt sauce over the meatballs.
Garnish with chopped fresh dill and serve.