In a large mixing bowl, combine the ground chicken, salt, pepper, cumin, oregano, red pepper flakes, dill, mint, onion, garlic, and lemon zest.
Mix gently with clean hands until everything is evenly combined without overmixing.
Scoop the mixture using a tablespoon or cookie scoop and roll into evenly sized meatballs.
Heat olive oil in a large skillet over medium heat.
Add the Greek Chicken Meatballs in a single layer, leaving space between each one. Cook for 3–4 minutes per side until browned.
Continue cooking until the internal temperature reaches 165°F (74°C). Cook in batches if needed.
Serve over chopped romaine with cucumber, tomatoes, feta, cooked rice, and a generous spoonful of homemade tzatziki.