Chicken Shawarma from An Edible Mosaic

Name: Chicken Shawarma from An Edible Mosaic
Ingredients: 1 batch shawarma spice mix; ½ cup (125 ml) plain yogurt; 1½ tablespoons fresh lemon juice; 3 large cloves garlic, crushed; 1½ teaspoons salt; 2 lb (1 kg) boneless, skinless chicken breast; 2 tablespoons olive oil, plus more for sautéing; 16 ?atbreads garlic mayonnaise (page 24); Pickles (page 27); 2 teaspoons ground cumin; 2 teaspoons ground coriander; ¾ teaspoon ground black pepper; ½ teaspoon ground ginger; ½ teaspoon ground allspice; ¼ teaspoon ground fenugreek; ¼ teaspoon ground cardamom; ¼ teaspoon ground cloves; ¼ teaspoon ground sweet paprika; ¼ teaspoon ground turmeric; ¹/8 teaspoon ground red pepper (cayenne) (optional)