Heat olive oil in a large kettle or Dutch oven over medium-high heat. Add sausage and cook until the sausage is no longer pink inside (approximately 5 minutes). As the sausage cooks, break it into small pieces with a wooden spoon.
Add the red and Poblano pepper, celery, basil, oregano, rosemary, chili powder, cumin, and cinnamon to the pot. Generously season with salt and black pepper to taste, and stir to combine. Cook, stirring occasionally, until the veggies have softened, around 5-6 minutes.
Add chicken broth and simmer 20 minutes, stirring occasionally. Add spinach and cook for another 4-5 minutes, or just until the spinach wilts.
Remove from heat and serve immediately. Top with shredded cheese and some additional diced Poblano pepper, if desired. Enjoy!