Celtic are now unbeaten in 22 league games, but Lennon believes that the scoreline flattered his team.
"To come here and win 4-0 probably flatters us. I'm delighted," Lennon told Sky Sports News.
"We had to withstand 15-20 minutes of pressure and my goalkeeper had to make a couple of good saves.
"I didn't think we were at our best compared to our last two games."
Celtic are 15 points clear at the top of the Scottish Premiership.