1. Make the tzatziki: In a bowl, combine Greek yogurt, grated and squeezed cucumber, garlic, lemon juice, dill, and salt. Stir well, cover, and refrigerate.

2. Cook the beef: Heat olive oil in a large skillet over medium-high heat. Add the ground beef and break it apart with a spatula. Cook until browned and no longer pink, about 6-7 minutes.

3. Season the beef: Sprinkle cumin, oregano, smoked paprika, garlic powder, cinnamon, salt, and pepper over the cooked beef. Stir well and cook for another 1-2 minutes until fragrant. Remove from heat and stir in lemon juice.

4. Warm the pita: Heat a clean dry skillet over medium heat and warm each pita for about 30 seconds per side, or char lightly over a gas flame.

5. Assemble the wraps: Spread a generous spoonful of tzatziki down the center of each pita. Layer with lettuce, the spiced ground beef, tomatoes, cucumber, red onion, feta, and pepperoncini if using.

6. Wrap and sear (optional): Fold the sides in and roll tightly. Place seam-side down in the hot skillet for 1-2 minutes until golden and crisp. Flip and repeat.

7. Serve: Slice in half and enjoy immediately, with extra tzatziki on the side.