Tried this on the CH Guide's recommendation. The jerk chicken was very good, as advertised: moist, sweet, bit of tanginess. I'd have to prefer the version I had at Donnett's, however, as reported this summer (see link). At Donnett's, it had a bit more complexity and heat. (The CH Guide had noted the relative lack of heat in Vernon's version.) Very pleasant experience at Vernon's, though. Pleasant people, good sides, some good homemade beverages. The jerk pork, which my wife had, was kind of chewy. Stick to the chicken, I'd say.
Vernon's New Jerk house
987 E 233rd St. Bronx