Vegetable gel capsules dissolve very fast.So, you can break the coconut oil (frozen or room tempt) into smaller bits and feed it that way. I do not know if the capsule dissolves quickly enough in a chicken's digestive system or not; maybe @BY Bob or @RoyalChick would know that.
When I gave my girl antibiotics, the capsule was dosed for humans, so I opened the capsule, mixed it with some H20, and syringed it into her. (I mixed it with water to help being able to meter out the correct dose, and it wasn't much, so I could easily give it a drop at a time onto the tongue and she swallowed it on her own. If you don't have a needle-less syringe, Walmart's pharmacy will give them out for free (cheap disposable plastic ones, but I keep, sanitize & reuse) Just tell them you have liquid medicine you need to dispense - they will ask the volume (cc s) and will give you an appropriate sized syringe.