Heat the oil in a large stockpot over medium heat, then add the onion and cook 5-7 minutes, until soft.
Add the chicken and cook until seared on all sides, about 5 minutes, stirring occasionally.
Add the remaining vegetables and cook another 5 minutes.
Add the broth, coconut milk, and seasonings and bring to a boil, then reduce the heat to medium-low and simmer about 20 minutes.
