Heat the olive oil in a large pot over medium heat. Add the ground turkey and cook until it is no longer pink, breaking it up with a spoon as it browns.
Add the diced onion, minced garlic, and diced green bell pepper to the pot. Cook for 4 to 5 minutes until the vegetables begin to soften.
Stir in the chili powder and ground cumin. Cook for 1 minute until the spices become fragrant.
Add the kidney beans, black beans, crushed tomatoes, and chicken broth. Stir everything together and bring the mixture to a simmer.
Reduce the heat to low, cover the pot, and let the stew simmer for 15 minutes. Season with salt and black pepper to taste.
Ladle the stew into bowls and top each serving with chopped fresh cilantro.