The Boston Market in Trenton has been reported closed as of June 30, 2019.
You can read the article about Boston Market closures from QSR Magazine:
Boston Market Closes 45 Restaurants Amid Rising Costs
Boston Market shuttered six restaurants June 30 and closed another 39 this past Sunday, the chicken chain revealed in a letter to employees. Dated July 6 and circulated to various outlets, chief executive Frances Allen said the company “must take steps to ensure our operational structure will support long-term sustainability.”