Slice the onion and mince the garlic. Add the onion, garlic, and cooking oil to a large pot. Sauté the onion and garlic over medium heat until the onions are soft and translucent (about 5 minutes).
Add the jerk seasoning, orange juice, chicken broth, and collard greens to the pot. Stir to combine. Place a lid on the pot, turn the heat up to medium-high, and allow the broth to come up to a boil.
Once boiling, turn the heat down to medium-low and let the collard greens simmer, stirring occasionally, until they are tender (about 30 minutes, or to your liking). Keep the lid in place when not stirring. Serve hot.