Preheat your oven to 400°F (200°C) and line a large sheet pan with parchment paper for easy cleanup.
Pat the chicken breast dry with a paper towel and cut it into 1-inch bite-sized cubes.
Rinse the chickpeas in a colander and pat them very dry; removing excess moisture is the secret to getting them crispy in the oven.
Place the chicken cubes, chickpeas, broccoli florets, and sliced bell peppers onto the prepared sheet pan.
Drizzle the olive oil over the ingredients and sprinkle with smoked paprika, sea salt, and black pepper, tossing thoroughly to ensure an even coating.
Spread the mixture into a single layer and roast for 18 to 22 minutes, or until the chicken is cooked through and the chickpeas are golden.
While the bowl base roasts, whisk together the Greek yogurt, lemon juice, and garlic powder in a small ramekin until smooth and creamy.
Transfer the roasted chicken and vegetables to a bowl and finish by drizzling the tangy yogurt sauce over the top.