Finely dice the red onion, red bell pepper, and peel and cube the sweet potato into half-inch pieces.
Heat the avocado oil in a medium pot over medium-high heat and sauté the onion, bell pepper, and sweet potato for 5 minutes until the onion is translucent.
Drain the tofu and crumble it directly into the pot using your hands, creating a texture similar to ground meat.
Add the black beans, tomato puree, vegetable broth, maple syrup, chili powder, cinnamon, sea salt, and black pepper to the pot.
Bring the mixture to a gentle boil, then reduce the heat to low, cover, and simmer for 12 to 15 minutes or until the sweet potatoes are fork-tender.
Stir in the nutritional yeast until fully incorporated and the chili has thickened into a rich, creamy consistency before serving.