Heat avocado oil in a large skillet over medium-high heat.
Add the diced sweet potatoes to the skillet and cook for 5-7 minutes, stirring occasionally, until the edges are golden and caramelized.
Add the ground turkey and diced onion to the skillet, breaking up the meat with a spatula until browned and cooked through.
Stir in the diced bell peppers, chili powder, cumin, garlic powder, sea salt, and black pepper, sautéing for 2 minutes until the spices are fragrant.
Pour in the tomato puree, rinsed black beans, and water, then bring the mixture to a gentle simmer.
Reduce the heat to low, cover the skillet, and cook for 10 minutes until the sweet potatoes are tender and the chili has thickened slightly.