A Super Bowl of Chili

Name: A Super Bowl of Chili
Ingredients: 4 cans (15 ounces each) black beans, thoroughly drained & rinsed, divided; 2 tablespoons olive oil; 2 large red onion, diced; 2 large red bell peppers, diced; 2 large green bell peppers, diced; 8 cloves garlic, minced; 2 tablespoons chili powder; 2 tablespoons ground cumin; 2 tablespoons raw cacao powder; 1/2 teaspoon ground cinnamon; 1 large sweet potato, diced; 2 cans (28 ounces each) fire-roasted diced tomatoes; 4 cups filtered water; salt & pepper to taste