Preheat your oven to 400°F and line a large baking sheet with parchment paper for easy cleanup.
Dice the sweet potato into 1/2-inch cubes and cut the chicken breast into bite-sized pieces for even cooking.
Drain and rinse the chickpeas, then pat them completely dry with a clean kitchen towel to ensure they get crispy in the oven.
Place the sweet potatoes, chickpeas, chicken, and broccoli florets on the baking sheet and toss with olive oil, sea salt, black pepper, garlic powder, and smoked paprika.
Spread the ingredients in a single layer and roast for 20-25 minutes, or until the chicken is cooked through and the sweet potatoes are tender.
While the bowl base roasts, whisk together the tahini and lemon juice in a small bowl, adding a teaspoon of warm water at a time until it reaches a smooth, pourable consistency.
Divide the roasted mixture into a bowl and finish by drizzling the zesty tahini dressing over the top.