Preheat your oven to 400°F and line a large baking sheet with parchment paper for easy cleanup.
Drain and rinse the chickpeas, then pat them very dry with a paper towel to ensure they get maximum crunch.
In a mixing bowl, toss the chickpeas with half of the olive oil, smoked paprika, and a pinch of salt.
Cut the chicken breast into bite-sized cubes and toss with the remaining olive oil, garlic powder, salt, and pepper.
Arrange the chicken, chickpeas, and broccoli florets in a single layer on the prepared baking sheet, ensuring they aren't crowded.
Roast for 20-25 minutes, tossing the ingredients halfway through, until the chicken is cooked through and chickpeas are golden.
While roasting, whisk together the tahini and lemon juice in a small bowl, adding a teaspoon of warm water at a time until it reaches a drizzling consistency.
Transfer the roasted chicken and vegetables to a bowl and finish by drizzling the creamy tahini dressing over the top.