Heat the olive oil in a large pot over medium heat.
Add the diced sweet potatoes to the pot and cook for 8 minutes, stirring occasionally, until the edges are golden and caramelized.
Add the ground turkey, diced red onion, and bell pepper to the pot, breaking up the meat with a spoon until it is fully browned.
Stir in the chili powder, cumin, garlic powder, sea salt, and black pepper until the meat and vegetables are well coated.
Pour in the tomato puree, rinsed black beans, and water, then bring the mixture to a gentle boil.
Reduce the heat to low, cover, and simmer for 15 minutes until the chili has thickened and the sweet potatoes are tender.