Add a touch of sweetness to your chicken shawarma by using a food processor to blend together garlic, Dijon mustard, honey, and spices. The honey mustard marinade gives the chicken a delicious caramelized flavor when grilled or roasted. Serve the honey mustard chicken shawarma in warm pita bread with a dollop of honey mustard sauce, pickles, and fresh greens for a delightful combination of sweet and savory.