Preheat your oven to 425°F and line a large baking sheet with parchment paper for easy cleanup.
Wash the sweet potato thoroughly and slice it into even wedges, approximately 1/2-inch thick.
In a large bowl, toss the wedges with olive oil, chili powder, garlic powder, sea salt, and cayenne pepper until every surface is coated.
Arrange the wedges in a single layer on the prepared baking sheet, ensuring they are not touching to allow for maximum crisping.
Roast for 20 to 25 minutes, flipping the wedges halfway through, until they are tender on the inside and caramelized on the edges.
While the potatoes roast, whisk together the Greek yogurt, hot sauce, and lime juice in a small bowl until smooth and creamy.
Remove the wedges from the oven and serve immediately alongside the spicy yogurt dip.