Heat a large skillet over medium heat and add the ground turkey. Cook until no longer pink, breaking it up with a spoon as it browns.
Transfer the cooked turkey to the slow cooker. Add the sweet potato cubes, diced onion, minced garlic, and diced red bell pepper.
In a small bowl, whisk together the chicken broth, tomato paste, smoked paprika, oregano, salt, and black pepper until smooth.
Pour the broth mixture over the ingredients in the slow cooker and stir to combine.
Cover and cook on low for 6 to 7 hours or until the sweet potatoes are fork-tender.
Stir the stew, taste, and adjust salt or pepper if needed. Sprinkle with chopped parsley just before serving.