In a large dutch oven, lay bacon across bottom on medium-high heat. Cook bacon until browned and crisp on both sides. Remove and crumble.
Add onions and greens to the dutch oven. Add chicken stock, garlic powder, paprika, vinegar. Add crumbled bacon, while reserving a bit to go on top when serving. Add salt, pepper and hot sauce to taste. Bring liquid to a simmer and cook for an hour.
Taste test the collard greens, if too bitter or hard, continue to cook for another 15 minutes. Once softened, remove from liquid and enjoy!