Preheat your oven to 400°F (200°C) and line a large sheet pan with parchment paper for easy cleanup.
Peel the sweet potato and cut it into uniform 1/2-inch cubes to ensure even roasting.
Slice the chicken breast into bite-sized pieces, approximately 1-inch in size.
Place the chicken, sweet potato cubes, and broccoli florets onto the prepared baking sheet.
Drizzle the extra virgin olive oil over the ingredients, then sprinkle evenly with sea salt, black pepper, garlic powder, smoked paprika, and dried oregano.
Use your hands or tongs to toss everything together until the chicken and vegetables are thoroughly coated in oil and spices.
Spread the mixture into a single layer, ensuring the pieces aren't overcrowded so they roast rather than steam.
Bake for 20-25 minutes, tossing the ingredients halfway through, until the chicken is cooked to an internal temperature of 165°F and the sweet potatoes are fork-tender and golden brown.