Pearce is very excited about the former Southampton forward's potential in the wake of his contribution to Monday night's 4-1 friendly win over Israel at Oakwell.
Oxlade-Chamberlain was brought on as a half-time substitute to help the Young Lions overturn a 1-0 deficit and he certainly did that as he provided the assists for three goals from open play as well as earning the penalty which Nathan Delfouneso scored from.
The game marked the 18-year-old's third appearance for the Under-21s and highlighted why Arsenal boss Arsene Wenger decided to shell out big money on securing his signature.
"I thought he gave us a real lift when he came on," head coach Pearce said.
"His training has looked very, very good when he has been here - we had an 11 v 11 game on the second day when we had got together and after 10 minutes of that I said to Steve (Wigley, Pearce's assistant) 'this kid has got to play'.
"His performance was outstanding just in that 10-minute snapshot.
"He has got a bright future and he played very well here - although we have to nurture all of them, to make sure they all have a bright future."