The write up for the Shawarma is on Weekly Vegan Menu.
There are three components to this dish:
Use either shredded seitan (Tender Seitan is good) or a rehydrated TVP chunk or Soy Curls:
Par-boil your potatoes, peel them and dice them. Dice your onions, mince your garlic and heat a large skillet.
Drain the chickpeas.
Using a knife to hold everything tight while you begin the roll,
roll the shawarma as tightly as you can.
Spray with some oil...
...and broil ...
...until golden and crisp.