Heat 4 tablespoons olive oil in a skillet over medium heat. Add sweet potatoes, carrots, bell pepper, and onion; cook, stirring occasionally, until tender, about 20 minutes. Add garlic and continue cooking until vegetables have accumulated browned bits on them, about 5 minutes more.
Stir black beans, corn, cinnamon, chipotle pepper, paprika, and cumin into the skillet. Mix thoroughly and reduce heat to medium-low, adding another tablespoon olive oil if mixture is dry. Cook for another 5 minutes before serving.