I'll give you the cookbook answer and say, you need to check with the Pennsylvania board.
I'm trying to think if I know any PA engineers on the site. Maybe @RBHeadge PE knows someone who could give an easy answer.
I'm not licensed in PA. But as far as I can tell from reading the law it is not required for the first renewal after initial licensure.
Engineer, Land Surveyor and Geologist Registration Law Section 4.5.(g)(2)
An individual applying for initial licensure and registration shall be exempt from the requirement set forth in subsection (a) for the licensure period immediately following initial licensure and registration.