Chicken Shawarma

Name: Chicken Shawarma
Prep time: 5 min
Cook time: 25 min
Total time: 30 min
Cuisine: Middle Eastern
Ingredients: 1/2 cup extra-virgin olive oil; 2 tablespoons (1/4-stick) salted butter; 1 yellow onion, sliced lengthwise into 1-inch wedges; 3 cloves garlic, minced or pressed; 4 pounds boneless, skinless chicken thighs, cut into 1/4-inch strips; 1 tablespoon paprika; 1 tablespoon curry powder; 1 tablespoon seasoned salt; 2 teaspoons black pepper; 1 1/2 teaspoons ground cumin; 1 teaspoon turmeric; 1 teaspoon cinnamon; 1/2-1 teaspoon cayenne pepper (optional); 1/2-1 teaspoon crushed red pepper flakes (optional); 1/2 cup garlic broth; Pita/flatbread, warmed or room temperature; Hummus; Red onion, thinly sliced; Dill or sour pickles, diced; Tzatziki