Meanwhile, over medium high heat, heat 1 tablespoon olive oil in a large nonstick skillet. Add chorizo; cook chorizo about 8-10 minutes, or until slightly crisped. Transfer to a paper-lined plate. Set aside. Drain drippings in skillet, reserving about 1 tablespoon drippings in skillet. In same skillet, add 4 tablespoons olive oil, garlic, and onions. Cook, stirring, 3-4 minutes or until onions are tender. Add oregano; cook 1 additional minute. Remove from heat. Stir in mustard, honey, vinegar, smoked paprika and red pepper flakes until well combined. Set mustard-onion dressing aside.