In a large bowl, toss the cubed lamb with the garlic, thyme, oregano, rosemary, and lemon juice. Coat the lamb completely. Let the lamb marinate for 30 minutes.
Heat a large, deep skillet over high heat and drizzle in the remaining 2 tablespoons of olive oil. Season the lamb with 1 teaspoon salt, and 1/2 teaspoon pepper. Add the lamb to the skillet and cook until browned on all sides and cooked to medium-rare, about 4 minutes on each side.
Heat the pita bread in a dry pan or in the microwave for just a few seconds until warm and pliable. On each piece of bread, lay a few pieces of lamb, some tomato slices, lettuce, feta and a spoonful of each sauce. Transfer to a serving platter, fold and enjoy!
To make Tzatziki sauce:
In a small bowl, combine the cucumber, mint, dill, lemon zest, and yogurt. Season with salt, to taste, and serve with the gyros.
Yield: about 2 cups
To make Spicy Sour Cream Sauce:
In a small bowl, whisk the sour cream, lemon, and sriracha sauce together until completely blended. Season the sauce with salt, to taste, and serve with the gyros.
Yield: about 1 cup
This recipe was created by a contestant during a cooking competition. It has not been tested for home use.