Preheat oven to 450 degrees. Cut 3-4 medium sweet potatoes into wedges and arrange on a baking sheet. In a small bowl, combine 2 tbs olive oil, 1 tbs fine sugar, 1 tsp chili powder, 1 tsp kosher salt, and 1/4 tsp ground black pepper. Whisk with a fork, and drizzle over sweet potato wedges. Toss to combine, and until potatoes are completely covered in the chili sauce. Bake in preheated oven for 15-20 minutes, until tender when pierced with a fork. Remove from oven, and let cool.