Preheat your oven to 400°F (200°C) and line a large sheet pan with parchment paper.
Cut the chicken breast into bite-sized cubes and chop the red bell pepper and broccoli into uniform pieces.
Rinse and drain the chickpeas, then pat them dry with a paper towel to ensure they get crispy in the oven.
Place the chicken, chickpeas, broccoli, and bell peppers on the sheet pan.
Drizzle with extra virgin olive oil and sprinkle with sea salt, black pepper, garlic powder, and smoked paprika.
Toss everything thoroughly to ensure an even coating of oil and spices, then spread into a single layer.
Roast for 20 to 25 minutes, tossing halfway through, until the chicken is cooked through and the vegetables are tender with charred edges.
While the bowl base roasts, whisk together the lemon juice and tahini in a small bowl until smooth, adding a teaspoon of water if needed to reach a drizzling consistency.
Transfer the roasted mixture to a bowl and finish by drizzling the zesty tahini dressing over the top before serving.