Warm the pita bread rounds on the grill or in a toaster for a few seconds to make them pliable.
To assemble the sandwiches, spread a generous amount of tzatziki sauce on each warmed pita bread round.
Preheat a grill or skillet over medium-high heat. Cook the marinated meat for about 4-5 minutes per side, or until cooked through and slightly charred. Remove from heat and let it rest for a few minutes. Slice the meat into thin strips.
Place a portion of sliced gyro meat on top of the sauce, followed by sliced tomatoes, cucumbers, and optional toppings like sliced red onions and crumbled feta cheese.
Fold or roll the pita bread tightly to create a wrapped sandwich.
Serve the Pita Wrapped Gyro Sandwiches immediately and enjoy!