Heat a skillet over medium heat and cook the ground turkey until it is no longer pink, breaking it up as it cooks. Add the diced onion, bell pepper, and garlic and cook for 3 minutes until the vegetables begin to soften.
Transfer the turkey mixture to the slow cooker. Add the black beans, diced tomatoes, frozen corn, chicken broth, chili powder, cumin, salt, and black pepper.
Stir everything together, cover the slow cooker, and cook on low for 6 to 7 hours.
Taste and adjust salt if needed. Serve hot with fresh cilantro and lime wedges on the side.