Lee bought his season's tally up to ten - six in his last three games - at Havant & Waterlooville having created a club record with his total of 17 for the reserve side last term.
"He keeps scoring goals and keeps getting into scoring positions time and time again," said Clive. "Lee is full of confidence at the moment and is improving all the time, not just with his goalscoring, but with his all-round play.
"I think he enjoyed playing with Grzegorz Rasiak, it gave him license to get into other positions and I thought the two played well together and had numerous chances.
Grzegorz is looking to improve, he wants to score more and more goals and is very hungry
"He is working as hard as ever and is honing his skills all the time.
The arrival of Clive back at the club signalled an upturn in the goalscoring fortunes of Barney, who previously operated as a second striker linking up play between midfield and attack. His goals return at that time suffered as a result - something our former striker quickly set about changing.
"It is something I saw very early when I came. We talked about it and he took it on board - that is full credit to him. If I can help him in any way I try to, but his goals are down to the way he has worked to improve his game and, most importantly, his goalscoring."
Clive Allen paid tribute to the contribution of Lee Barnard after the striker netted another brace in the 3-0 win over Portsmouth on Tuesday.