Preheat oven to 375 F.
Wash and peel sweet potatoes. Slice into thin wedges.
Arrange sweet potato wedges in a 9 x 13-inch baking dish.
In a small bowl, mix together soy sauce, sesame oil, maple syrup (optional), garlic powder, and red chili flakes.
Drizzle the sesame soy glaze over the sweet potato wedges and toss with tongs to distribute well.
Sprinkle with sesame seeds and place in the oven. Bake at 375F for 35-40 minutes, until tender and golden brown.
Remove from oven, sprinkle with sliced chives or green onions, and serve immediately. Makes 4 servings (about 4 ounces each).
