In a large stock pot over medium heat, add olive oil, onion, carrot, and celery. Season with ½ tsp salt and cook the veggies for 5 minutes, stirring frequently.
Add the garlic, zucchini, chili powder, garlic powder, paprika, cumin, the rest of the salt and pepper, and cook 3-4 minutes, stirring constantly.
Add the chicken stock, oregano, and parsley or cilantro and stir to combine. Bring the mixture to a simmer and cook for 10 minutes.
Add the chicken and cauliflower rice and simmer for another 10 minutes or until the veggies are tender. Serve warm and top with any desired toppings!