Drain and rinse the chickpeas, then pat them thoroughly dry with a paper towel to ensure the falafel stays crispy.
In a food processor, pulse the chickpeas, garlic, parsley, and cilantro until finely minced but not pureed.
Transfer the mixture to a bowl and combine with the ground turkey, cumin, coriander, sea salt, and black pepper, mixing until just incorporated.
Form the mixture into four small, thick patties, pressing firmly so they hold their shape during cooking.
Heat the olive oil in a non-stick skillet over medium heat and sear the patties for 4-5 minutes per side until golden brown and cooked through.
In a small jar, whisk together the tahini, Greek yogurt, lemon juice, and water until the sauce is smooth and pourable.
Plate the crispy falafel and finish with a generous drizzle of the lemon-tahini sauce.