In a large skillet over medium heat, add a bit of olive oil and sauté the chopped onion until translucent.
Add the minced garlic and cook for an additional minute.
Increase the heat to medium-high and add the ground chicken. Use a spatula to break it apart, mixing it with the onions and garlic.
Sprinkle in the cumin, smoked paprika, salt, and pepper. Cook, stirring occasionally, until the chicken is browned and fully cooked, about 5-7 minutes.
While the chicken is cooking, warm the whole wheat pitas in a separate pan or in the oven to make them pliable.
Once the chicken is cooked, fill each pita with a generous scoop of the mixture. Top with halved cherry tomatoes and diced cucumbers.
Drizzle tzatziki sauce over the filled pitas. Add any optional garnishes you desire.
Serve the pitas warm with lemon wedges on the side for that extra zing!
