In a food processor, pulse the chickpeas, garlic, and parsley until coarsely chopped but not pureed.
In a medium bowl, combine the chickpea mixture with the ground turkey, cumin, coriander, salt, and pepper until well incorporated.
Form the mixture into 4 or 5 small, flat patties.
Heat the avocado 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.
While the falafel cooks, whisk together the Greek yogurt, tahini, and lemon juice in a small bowl until smooth.
Slice the cucumber and halve the cherry tomatoes.
Arrange the falafel patties in a bowl with the cucumber and tomatoes, then drizzle with the lemon-tahini sauce.