According to police, the pair approached the Pizza Shoppe located on the 1500 block of East Lycoming Street around 7 p.m.
One suspect went inside while the second held the front door open and acted as a lookout.
The robber pointed a handgun at the employee behind the counter and demanded cash.
Both suspects then fled the scene heading east on Lycoming Street.
The first suspect is described as a black male, 20 years-old, 5'5" tall with a thin build. He was wearing a black ski mask covering the lower portion of his face, white hooded sweatshirt and a black North Face jacket.
The second suspect is described as black male. He was wearing a red & blue hooded coat with the hood over his head, blue jeans and white sneakers.
If you see these suspects do not approach him, contact 911 immediately.
Anyone with information should call police at 215.686.TIPS (8477) or text a tip to PPD TIP (773847).
VIDEO: Click here to watch the surveillance video