Preheat your oven to 425°F (220°C).
Toss the mixed bell peppers, zucchini, red onion, and cherry tomatoes with olive oil, salt, and your choice of spices, then spread them evenly on a baking sheet.
Roast the vegetables in the oven for about 20 minutes or until tender and slightly charred, stirring halfway through.
Meanwhile, season the chicken breast with a blend of shawarma spices such as cumin, coriander, turmeric, paprika, garlic powder, and a touch of salt.
Sear the seasoned chicken in a preheated skillet over medium-high heat for about 3-4 minutes per side until golden, ensuring it reaches an internal temperature of 165°F (74°C).
Slice the chicken into strips.
Assemble your bowl by placing the roasted vegetables at the base, topping with sliced chicken, and drizzling with tahini. Garnish with fresh parsley.
Serve warm and enjoy your herb-spiced shawarma bowl with a burst of roasted vegetable flavors.