Add the olive oil to a large skillet set over medium-high heat. Once the oil is hot, add the ground chicken, onions, peppers, garlic and 1/2 teaspoon kosher salt. Cook, breaking apart the meat with a spatula, until it is fully cooked and the vegetables have softened, about 5 minutes. Transfer the chicken mixture into the slow cooker.
To the slow cooker, add the kidney beans, pinto beans, tomato sauce, tomato paste, unsweetened cocoa powder, cumin, smoked paprika, coriander, oregano, chili powder and chicken broth.
Cover the slow cooker and cook the chili on LOW for 8 hours, or on HIGH for 4 hours.
Serve the chili with assorted toppings.