The 24-year-old has now scored six in six since signing from Boreham Wood in the summer.
The striker turned in Gavin Gunning’s header from Jeff King’s corner and then converted two penalties to help the Spireites overcome the Bees 4-2 at the Technique Stadium on Tuesday night.
“We had to bounce back after the disappointment on Saturday so thankfully we got there and I am happy to come away with three goals,” he said.
Town came flying out of the blocks and Tshimanga had bagged a double just eight minutes in.
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"With the following that we have we know we have to come out fast and if you get the first goal it gets the fans on our side and it helps us throughout the game,” the forward explained.
Two quick-fire goals from Barnet unexpectedly levelled the score before half-time but Chesterfield showed great character to score two more through another Tshimanga penalty and Gunning’s deflected free-kick.
Tshimanga said: "We knew that we had to be patient coming out for the second-half. We know that we have got the quality around the pitch to give us the chances as forwards.”
‘Kabs’ started up front with Stefan Payne for the first time on home soil and the pair formed a promising partnership.
"He (Payne) had a really good game,” Tshimanga added. “It is always tough coming in as a forward because he has not had a lot of games. His work-rate was superb today and me and him linked up well.
"That (competition) is one of the biggest things the manager told me before I came here. There is a lot of quality in the side so whoever is picked on a matchday has to be on their game and give it everything.
"That is a sign of a good team and you need everyone to push each other and get the best out of each other.
"I have come here to do the best I can with goals and assists but first and foremost I have got to work hard for the team.”