The Spain winger believes his side cannot afford to settle for a draw, and suggests that misfiring Fernando Torres can recapture his form with the help of ex-team-mate Juan Mata
The Spaniard is adamant that the Liga outfit want to top Group E if possible and believes that their superior form could be enough to see them defeat the Blues.
“We know it's not going to be complicated,” Hernandez told The National.
“Chelsea are one of the strongest teams in Europe and always reach the later stages of the Champions League, but we will try and win. We won't change our style and we won't try and get a draw because that's too risky.
“We're in form, too, and Chelsea are not. Maybe that will be a factor because we travel with confidence, just as we did to Manchester one year ago.
“We're not afraid. We want three points because we want to win the group.”
The winger also voiced his opinion that fellow Spaniard, striker Fernando Torres, will rediscover his form, having struggled since his £50 million move to Stamford Bridge in January.
“I know things are not going well for him, but he's a great player,” Hernandez declared.
“He was a great player for Atletico Madrid and Liverpool. I think he will demonstrate that he's a quality player at Chelsea and I also think that Juan Mata will be good for him by creating chances for him.”
Mata is a close friend of Hernandez’s, having been a team-mate of his at Valencia until his summer switch to Andre Villas-Boas’ side, and the 26-year-old is looking forward to crossing paths with his fellow Spain international.
“I swapped shirts with Juan here in Valencia and we'll swap again in London,” he added.
“I'm pleased that he's doing well in London. He deserves all the success and so does one of my other roommates, David Silva [at Manchester City].”
Asked if he might be tempted to join his countrymen in a move to the Premier League, Hernandez said: “I like English football and I think the English and Spanish leagues are the best two in the world.
“I'm enjoying myself at Valencia, though, just as Silva, David Villa and Mata enjoyed it here.”
Los Che, who are currently third in La Liga, will qualify for the knockout stages with a win or a score draw, while a goalless stalemate would also be enough if Bayer Leverkusen were to lose to Genk.