Preheat your oven to 400°F (200°C) and line a large rimmed baking sheet with parchment paper for easy cleanup.
Peel the sweet potato and cut it into 1/2-inch cubes to ensure they roast evenly with the other ingredients.
Cut the chicken breast into bite-sized pieces, approximately 1-inch in size, and trim any excess fat.
In a large mixing bowl, combine the chicken, sweet potato cubes, and broccoli florets.
Drizzle the extra virgin olive oil over the mixture and sprinkle with sea salt, black pepper, garlic powder, smoked paprika, and dried oregano.
Toss everything thoroughly until the chicken and vegetables are well-coated in the oil and spice blend.
Spread the mixture in a single layer on the prepared baking sheet, ensuring there is space between pieces for maximum crispiness.
Roast for 20-25 minutes, tossing halfway through, until the chicken is cooked through and the sweet potatoes are tender and golden-brown.