Preheat oven to 350℉. Heat olive oil in 10" cast iron skillet over medium heat. Add onion, green pepper, garlic and sauté for 2-3 minutes until starting to soften. Add chorizo and cook for an additional 2-3 minutes, stirring occasionally. Stir in spinach, roasted red peppers and herbs, cooking until spinach has completely wilted, approximately 2 minutes.