Shawarma Stuffed Peppers

Name: Shawarma Stuffed Peppers
Ingredients: * 1 tbsp olive oil; * 1 1/2 tbsp cumin; * 1 tbsp paprika; * 1/2 tsp allspice; * 1/2 tsp chili powder; * 1 tsp sumac; * 1/2 tsp garlic powder; * 1/2 tsp cardamom; * 1 1/2 tsp kosher salt; * 1/2 tsp cracked black pepper; * for filling:; * 1 pound chicken,; * 1 cup dried bulgur; * 4 tbsp extra virgin olive oil, divided; * 1/2 white onion, diced; * 2 garlic clove, minced; * 2 plum tomato (about 1/4 cup), diced; * 1/4 tsp kosher salt, plus more to taste; * 1 tbsp tahini paste; * juice from 1 lemon; * 3/4 -1 cup chicken broth; * 6 large bell pepper; * for tahini sauce:; * 1/4 cup tahini paste; * 2 tbsp olive oil; * 1/4 tsp salt or to taste; * garnish: pickle, red cabbage, beet, parsley etc