In a medium pot or Dutch oven, cook the bacon over medium heat for a few minutes to render some of the fat. Add the smoked sausage and lightly brown. Add the onion, celery, and bell pepper and cook until vegetables are soft, about 5 minutes. Add the minced garlic and cook for another minute, then add the black-eyed peas, chicken broth, and Cajun seasoning. Bring to a simmer and cook for about 20 minutes. Season to taste with additional Cajun seasoning, if needed, and ladle over hot cooked rice. Top with green onions and serve.