In a mixing bowl, combine ground lamb, minced garlic, harissa paste, cumin, coriander, salt, and black pepper. Mix until well combined.

Heat a skillet over medium-high heat. Add the lamb mixture and cook, breaking it apart with a spatula, until browned and cooked through, about 8-10 minutes.

While the lamb is cooking, preheat the oven to 350°F (175°C).

Place flatbreads on a baking sheet and warm in the oven for about 5 minutes.

Remove flatbreads from the oven and top each with the cooked lamb mixture.

Add diced cucumber, tomato, and red onion on top of the lamb.

Drizzle with yogurt and sprinkle with chopped parsley before serving.