In a large chili pot or Dutch oven, heat the EVOO, one turn of the pan, over medium-high to high heat. Add the bacon and cook until the fat renders, about 2 minutes. Add the beef and cook, stirring, until browned, 8-10 minutes. Add the onion and cook until softened, about 5 minutes. Add the garlic and chili powder, a little salt and lots of pepper.
In a bowl, stir together the Worcestershire sauce, brown sugar, hot sauce and tomato sauce. Stir into the chili. Stir in the beef stock and bring to boil, then lower the heat and cook until thickened, 6-7 minutes.
Serve shallow bowls of chili with lots of sour cream and parsley on top.