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 dice it into small, uniform 1/2-inch cubes to ensure they cook through and get crispy.
Finely dice the red bell pepper and yellow onion.
In a large mixing bowl, combine the sweet potato cubes, bell pepper, and onion with the olive oil, smoked paprika, garlic powder, sea salt, and black pepper.
Add the ground turkey to the bowl, breaking it into small bite-sized chunks with your hands or a spatula, and toss gently to coat everything in the spice mixture.
Spread the hash mixture in a single, even layer across the prepared baking sheet, making sure not to overcrowd the pan so the vegetables roast rather than steam.
Bake for 25 to 30 minutes, tossing the mixture halfway through, until the turkey is browned and the sweet potatoes are tender and golden on the edges.
Remove from the oven and garnish with freshly chopped parsley before serving hot.