Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper for easy cleanup.
Pat the chicken breast dry with paper towels and cut into 1-inch bite-sized pieces.
Rinse and drain the canned chickpeas, then pat them thoroughly dry with a clean kitchen towel to ensure they achieve a crispy texture when roasted.
In a large mixing bowl, combine the chicken pieces, chickpeas, broccoli florets, and chopped red bell pepper.
Drizzle the mixture with olive oil and sprinkle with sea salt, black pepper, garlic powder, and smoked paprika, tossing well to ensure everything is evenly coated.
Spread the ingredients in a single layer on the prepared baking sheet and roast for 20-25 minutes, or until the chicken is cooked through and the chickpeas are golden and crisp.
While the bowl components are roasting, whisk together the Greek yogurt and lemon juice in a small ramekin until the sauce is smooth and pourable.
Place the cooked quinoa in a serving bowl, top with the roasted chicken and vegetable mixture, and finish with a drizzle of the lemon-yogurt sauce.