Using a thin knife create about 12 holes deep into the meat about 1/2 inch wide, you need to be able to fit some garlic and bacon in the hole
Place bacon and garlic in each hole and set aside
In a small mixing bowl, mix your sea salt, paprika, parsley, oregano, thyme, garlic powder, extra virgin olive oil, and red wine vinegar and mix well Rub your spice mixture all over both sides of your roast
Line the bottom of your crock pot with your sliced onions and whatever left over pieces of bacon you have Place your roast on top and cook on Low for 7-10 hours. Remember chuck roasts are tougher cuts of meat so the longer it cooks the better
Enjoy