Preheat your oven to 400°F (200°C) and line a large rimmed baking sheet with parchment paper for easy cleanup.
Pat the chicken breast dry with a paper towel to ensure a good sear, then cut into 1-inch bite-sized cubes.
Rinse and drain the chickpeas, then pat them thoroughly dry so they roast up crispy rather than steaming in the oven.
In a large mixing bowl, combine the cubed chicken, chickpeas, broccoli florets, and sliced red bell peppers.
Drizzle the extra virgin olive oil over the mixture and sprinkle evenly with sea salt, black pepper, garlic powder, and smoked paprika.
Toss everything thoroughly with your hands or a spatula until every piece is evenly coated in the oil and spice blend.
Spread the mixture in a single layer on the prepared baking sheet, ensuring the pieces aren't overcrowded to allow for proper browning.
Roast for 18-22 minutes, or until the chicken reaches an internal temperature of 165°F and the vegetables are tender with lightly charred edges.
Remove from the oven and immediately drizzle with fresh lemon juice and garnish with chopped parsley to brighten the flavors before serving.