Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper for easy cleanup.
Dice the chicken breast into uniform 1-inch cubes to ensure even cooking.
Chop the sweet potato into small cubes, halve the Brussels sprouts, and break the broccoli into bite-sized florets.
In a large mixing bowl, combine the chicken, sweet potato, Brussels sprouts, broccoli, and rinsed chickpeas.
Drizzle with extra virgin olive oil and sprinkle with sea salt, black pepper, garlic powder, and smoked paprika.
Toss everything thoroughly until the chicken and vegetables are evenly coated in oil and spices.
Spread the mixture in a single layer on the prepared baking sheet, ensuring nothing is overcrowded so they roast rather than steam.
Roast for 20 to 25 minutes, tossing halfway through, until the chicken is cooked through and the vegetables are tender with golden, crispy edges.