1. Preheat oven to 350 degrees Fahrenheit (180 degrees Celsius).
2. Clean chicken and pat dry. Place onions and garlic on the bottom of a roasting pan, and add chicken on top.
3. With a vegetable peeler, peel thin, wide strips of sweet potato (cut the leftovers into chunks and place around the chicken). Carefully place the strips on each piece of chicken, overlapping slightly, until they are covered entirely. (The strips will soften while baking and envelop the chicken pieces. It’s magic!)