Cut 500 gm chicken in slices. Take some oil in a pan and add chicken slices along with garlic. Fry them and then add ½ cup yogurt, 2 tbsp vinegar, 1 tbsp lemon juice, salt and 2 tbsp tikka masala.
Keep on frying till the water dries. Then take it out on a plate and keep it aside.
To prepare salad, slice tomatoes and cucumber, slice 3-4 salad leaves and put them in a bowl. Add in 2-3 tbsp olive oil, green chilies and cucumber pickle. Salad is ready.
Now grease a pan, and toast pita breads. Open the pita bread and fill in chicken mixture, sauce, olives and salad. Chicken Shawarma is ready to serve.