Preheat your oven to 400°F and line a baking sheet with parchment paper.
Toss the cubed sweet potato with 0.5 tsp of olive oil, 0.125 tsp of sea salt, and 0.25 tsp of smoked paprika.
Spread the sweet potatoes in a single layer on the baking sheet and roast for 20-25 minutes until they are tender and slightly caramelized.
While the potatoes roast, heat the remaining 0.5 tsp of olive oil in a non-stick skillet over medium-high heat.
Add the ground turkey to the skillet, breaking it up with a spatula, and season with the garlic powder, black pepper, and the remaining 0.125 tsp of sea salt.
Cook the turkey for 6-8 minutes until it is browned and no longer pink.
Stir the chopped kale into the skillet with the turkey and cook for 2 minutes until the leaves are bright green and slightly wilted.
In a small bowl, whisk together the nonfat Greek yogurt and lemon juice until smooth.
Transfer the turkey and kale mixture to a serving bowl, top with the roasted sweet potatoes, and finish with a drizzle of the tangy yogurt sauce.