Preheat an outdoor grill for medium-high heat and lightly oil grate.

While the grill is preheating, mix together eggs, garlic, feta cheese, spinach, and turkey in a large bowl until well combined; form into 8 patties.

Cook on preheated grill until no longer pink in the center, 15 to 20 minutes.

Serve in a pitta pocket with some tzatziki!