Heat olive oil in your pot over medium heat. Toss in onions and garlic, sauté until soft and fragrant, about 3–4 minutes.
Add diced bell pepper and cook for another 3 minutes until slightly tender.
Stir in chili powder, cumin, smoked paprika, oregano, cayenne pepper, salt, and pepper. Let spices toast for 1 minute.
Add sweet potatoes, chickpeas, diced tomatoes (with juice), and vegetable broth. Stir to combine.
Bring chili to a boil, then reduce heat to low. Cover and simmer for 30 minutes or until sweet potatoes are tender. Stir occasionally.
Taste and adjust seasoning. Add more salt, pepper, or chili powder if needed.
Serve hot, garnished with fresh herbs if you’re feeling fancy.