In a large pot, warm the oil over medium heat. Add the onions, cook a few minutes and then add the garlic. Continue adding the vegetables, as you finish chopping them, in the order listed above. After about 10-15 minutes, when all the vegetables have been added to the pot and they are beginning to soften; add the spices, tomatoes, chicken and chicken broth. When you add the stewed tomatoes, crush them with the back of a wooden spoon, or simply reach into the soup (with clean hands) while they are still cool and use your hands to quickly crush them.
Increase heat to bring to a simmer and then reduce the heat and allow to simmer about 5 minutes until the chicken and broth are both warm. Enjoy!