Heat a large skillet to medium-high heat. Add 1 1/2 teaspoons olive oil and add onion, garlic, bell pepper, and jalapenos. Saute for about 5 minutes, until veggies are tender and fragrant. Add to slow cooker.
In same skillet, heat remaining 1 1/2 teaspoons olive oil. Add turkey and mushrooms and stir to combine. Sprinkle in cumin, salt, pepper, oregano, chili powder and smoked paprika. (note: the meat will taste very seasoned when done. Keep in mind these seasonings are not to flavor just the meat, they will season the entire pot of chili, so they are intentionally strong!) Add turkey mixture to slow cooker.
Add sweet potatoes, tomatoes, beans, broth, pumpkin, cinnamon, and cocoa powder to slow cooker and stir til combine. Place lid on pot and cook for 4-6 hours on high, or 8-10 on low. Slow-cookers vary greatly in temperature and cooking times, but really, the important thing to note is if the sweet potatoes are tender.
When done, turn off heat and let chili sit with lid off for 10-15 minutes to thicken. Season with additional salt to taste before serving. If desired, serve with sour cream, sliced avocados, and a small squirt of fresh lime juice, and any other toppings desired.