1. Preheat grill to medium high. In a large bowl, mix together chicken, oregano, lemon zest, garlic, salt, black pepper, and Tabasco until evenly blended. Form into 4 patties, about 4 inches in diameter and 3/4 inch thick.
2. In a small bowl, mix together yogurt, feta, lemon juice, and cumin until evenly blended, and set aside.
3. Brush hot grill with vegetable oil. Place burgers on grill and cook undisturbed for 4 to 6 minutes until well marked. Spray tops of the burgers with cooking spray and turn. Cook an additional 4 to 6 minutes until cooked through.
4. To serve, place 2 lettuce leaves each on four plates. Top with 2 tomato slices and 2 cucumber spears. Place a burger on each plate, top with 2 generous tablespoons sauce, and sprinkle with chives.
Source: Hannaford fresh Magazine, July -,- August 2012