Prepare your ingredients by finely chopping the dill and parsley, mincing the garlic, and crumbling the feta cheese. This will make cooking easier.
In a large bowl, mix the ground chicken, breadcrumbs, egg, and milk until slightly combined. Then, add the feta, dill, parsley, oregano, garlic, salt, and pepper. Stir gently until just mixed to keep the meatballs tender.
Moisten your hands with water and shape the mixture into meatballs about 1 to 1.5 inches wide. You should get around 15-20 meatballs.
Heat a large skillet over medium heat and add enough olive oil to coat the bottom. Once hot, cook the meatballs in batches, ensuring not to overcrowd the pan. Fry for 4-5 minutes on each side until golden brown and cooked through, reaching an internal temperature of 165°F (74°C).