Bent scored his first goal for more than three months to equalise Michael Chopra's opening effort for Ipswich before Andreas Weimann struck the winner for Villa.
And Lambert was delighted with Bent's display as well as N'Zogbia, who impressed in his first start since late September as the second striker.
Villa striker Gabriel Agbonlahor was also able to make an appearance as a substitute after a thigh problem.
Lambert said: "That was the really pleasing thing, to have the players back from injury.
"That finish is Darren Bent down to a tee. It was top class. But I thought his overall game was very good, his whole work ethic and the way he played.
"I thought his whole general game was very good, considering he only really trained with us yesterday, so it was a big, big effort from him.
"Charles N'Zogbia is certainly a talent, there is no two ways about it. It was a big thing for him to play because he has been out for well over six weeks or so and he only trained yesterday along with Darren and Gabby."
He added: "We left out a few lads to give them a break and I was delighted with everyone that came in, I thought it was a massive effort."