Heat the olive oil in a large dutch oven, on medium.
Add the onion and pepper, and saute until the onions are starting to turn translucent.
Break up the beef and add it to the dutch oven.
When about half of the meat is browned, add the jalapeño and garlic.
Continue to cook until all of the meat is browned. I usually use ground turkey or very lean beef, so I don't bother to drain it. But, if you want to, now is the time to drain off the fat and oil.
Add the diced tomatoes, kidney beans, brown sugar, bay leaves, and marinara sauce and stir.
Stir in the Worcestershire sauce and espresso.
If you prefer a thick chili (like me), add the tomato paste.
Stir in the chocolate, coriander, cumin, cayenne, and chili powder (that's a lot of c-words!). Cook for at least 15 minutes. After the 15 minutes, add more chili powder (or cayenne, or hot sauce) if it isn't spicy enough for you.
Add the oregano in the last 5 minutes of cooking so that it doesn't get bitter.
This, like most chili, is better the next day, or when it's been simmering all day. And you have only one pan to clean!