A Bayonne developer is pulling off a $20 million flip on a piece of property near Route 78 by allowing the New Jersey Turnpike Authority (NJTA) to take the land for the proposed controversial Turnpike expansion project. The Alessi Organization, the current owner of the former Marist High School site on Kennedy Boulevard, would be paid $31.1 million for the land under the eminent domain proceedings initiated by the NJTA in April. The developer had sought more, but an attorney said the company is unlikely to contest the NJTA’s figure. Alessi bought the 9.5-acre property for $11.4 million in 2021…