Substitute Lloyd Dyer hit a deflected late winner for the Foxes, who came from behind to register their first away points of the season after Jamie Vardy had cancelled out a Nicky Bailey opener.
And having perhaps not reaped the rewards for some promising performances on the road this term, Pearson was pleased to see his team record a third successive victory.
“It looked like being another frustrating day,” Pearson told the media post-match.
“We had numerous chances and spurned a few of them, their goalkeeper made some decent saves, they scored a wonder-goal – it was going down a similar path to what we’ve experienced before.
“The players worked very hard again and maybe we’ve had the rub of the green today, but you have to make it happen. We caused them enough problems to have won the game, but in the end it was reliant on a large deflection.
“I think we’d have taken an ugly win today and this was better than an ugly win – it was a good away win for us. Three on the trot is pretty good and we’ve won four out of five too, so we’re in a much better position.”
Pearson was particularly pleased with his side’s defensive resilience at the Riverside Stadium – with captain Wes Morgan and Irishman Sean St. Ledger outstanding at the heart of the back four.
“I thought we defended very well,” Pearson said.
“At times we had to dig in deep, but I think it’s important we don’t get frustrated when the opposition are keeping the ball. We didn’t allow them to create too many chances.
“It’s a big result for us in lots of ways, but ultimately we’ve earned some good fortune along the way.”