Marinate chicken thighs with yogurt, olive oil, garlic, Dijon mustard, oregano, black pepper, cumin, salt, lemon zest and juice
Cook marinated chicken until done
Prepare tzatziki by combining Greek yogurt, diced cucumber, dill, olive oil, garlic, lemon zest and juice, and salt
Warm pitas
Assemble gyros by filling pitas with cooked chicken, tzatziki sauce, sliced tomato, and fries
