By Brigit Binns
Sauté the onion
In a large saucepan over medium-high heat, warm the oil. When it is hot, add the onion and sauté until translucent, about 3 minutes. Add the chili powder and stir until fragrant, about 1 minute. Pour in the broth and bring to a boil.
Finish the soup
Add the shredded chicken, reduce the heat to medium, and sim