Step 1

Preheat the oven to 450 degrees F.

Step 2

Combine the olive oil, cumin, cinnamon, allspice, cardamom, turmeric, garlic, 2 teaspoons salt and a generous amount of pepper in a large bowl. Add the chicken and onions and toss to coat evenly. Spread in a single layer on a sheet pan, making sure the pieces are not overlapping. Bake until the chicken is cooked through and the onions are slightly caramelized, about 15 minutes.

Step 3

Meanwhile, mix the yogurt, lemon juice and a generous amount of pepper in a medium bowl until smooth. Warm the pitas in the microwave on a microwave-safe plate, 30 seconds to 1 minute.

Step 4

Spread the yogurt sauce on top of the pitas and spoon the chicken and onions over the sauce. Top with the pickles, tomatoes and shredded lettuce.