Heat the oil in a skillet over medium heat, and cook the chicken 10 minutes, or until juices run clear.Advertisement
Transfer chicken to a large pot over medium heat. Pour the tomatoes and kidney bean liquid into the pot. Mix in onions and potatoes. Season with chili powder, salt, and pepper. Cook 25 minutes, stirring occasionally, until vegetables are tender. Mix in kidney beans and corn, and continue cooking 10 minutes, or until heated through.