Preheat your oven to 400°F (200°C) and line a large rimmed baking sheet with parchment paper for easy cleanup.
Dice the chicken breast and the sweet potato into uniform 1-inch cubes to ensure they cook at the same rate.
In a large mixing bowl, combine the diced chicken, sweet potatoes, and broccoli florets.
Drizzle the olive oil over the mixture and sprinkle with garlic powder, smoked paprika, sea salt, and black pepper.
Toss everything thoroughly until the chicken and vegetables are evenly coated in the oil and spices.
Spread the ingredients in a single layer on the prepared baking sheet, making sure not to crowd the pan so the edges can get crispy.
Roast in the oven for 20 to 25 minutes, tossing the ingredients halfway through, until the chicken is golden and the sweet potatoes are tender.
Remove from the oven and transfer to a bowl to enjoy while hot and flavorful.