"I trained for weeks," the 29-year-old Jennings said at Joe Hand Gym in Northern Liberties. "And I'm fighting on Jan. 25."
He is undefeated in 17 fights with nine knockouts, but fought just once last year.
Jennings signed a promotional contract with Gary Shaw Productions in October in hopes of securing bigger bouts en route to a world title shot.
The 10-round fight against Szpilka (16-0, 12 KOs) is a big step toward that as Jennings will debut on HBO after five of his last six fights were televised by NBC Sports Network.
"What [Szpilka] brings to the table is that he's just another opponent, he's my 18th fight," Jennings said. "Like Forrest Gump said, 'That's all I have to say about that.' "
On the undercard, North Philadelphia super-middleweight Jesse Hart (11-0, 10 KOs) will meet Derrick Findley (20-11-1, 13 KOs) in a six-round bout. Hart is the son of former Philadelphia knockout artist Eugene "Cyclone" Hart.
Hart and Jennings train at the same gym and both are trained by Fred Jenkins.
"That's always good," Jennings said about fighting on the same card as Hart. "Philly in the building."
Jenkins said Jennings possessed "superstar qualities" from the moment he first walked into the gym just five years ago.
Jennings is a good listener, Jenkins said, and an athlete who consistently challenges himself.
"He's the type of fighter that can end a guy's career," Jenkins said.