Preheat your oven to 400°F (200°C) and line a large baking sheet with parchment paper.
Scrub the sweet potato and slice it into 1/4-inch thick rounds, then toss them with olive oil and a pinch of sea salt.
Arrange the rounds in a single layer on the baking sheet and roast for 20-25 minutes, flipping halfway, until they are tender and the edges are golden.
While the potatoes roast, heat a non-stick skillet over medium heat and add the ground turkey, breaking it up with a spatula.
Season the turkey with chili powder, cumin, sea salt, and black pepper, cooking until browned and fully cooked through.
Remove the sweet potatoes from the oven and pile them closely together, then top with the cooked turkey, black beans, and shredded cheddar cheese.
Return the tray to the oven and broil for 2-3 minutes until the cheese is bubbly and melted.
Garnish with diced red onion, bell pepper, avocado slices, and fresh salsa before serving immediately.