In a large mixing bowl, combine the ground chicken, finely chopped onion, minced garlic, parsley, cumin, coriander, salt, and black pepper.
Mix everything together until well combined, being careful not to overmix.
Divide the mixture into equal portions and shape into small oval or sausage-shaped koftas.
Preheat a grill or grill pan over medium-high heat and lightly brush it with olive oil.
Grill the Chicken Kofta with Garlic Yogurt Sauce for 10–12 minutes, turning occasionally until the koftas are golden brown and fully cooked with an internal temperature of 165°F (74°C).
While the koftas cook, prepare the sauce by combining the yogurt, lemon juice, and a pinch of salt in a small bowl. Stir until smooth.
Serve the grilled chicken kofta warm with the garlic yogurt sauce on the side. Garnish with extra parsley and lemon wedges if desired.