Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper to ensure the food does not stick without needing excess oil.
Peel the sweet potato and cut it into small 1/2-inch cubes, then toss them in a bowl with the olive oil, smoked paprika, and a small pinch of the sea salt.
Spread the sweet potato cubes in a single layer on one side of the prepared baking sheet and roast for 10 minutes.
While the potatoes roast, combine the ground turkey, green peas, garlic powder, dried parsley, remaining sea salt, black pepper, and water in a medium bowl.
Form the turkey mixture into 5 small, flat medallions (about 1.5 inches wide) and place them on the other side of the baking sheet.
Return the tray to the oven and bake for an additional 12-15 minutes until the turkey bites are cooked through and the sweet potatoes are tender and caramelized.
Serve the turkey medallions and roasted sweet potatoes warm as a nutritious, savory finger-food dinner.