Chelsea are doing well to be fair, despite having hardly any of the ball they've gone the closest on 2 occasions with Willian. Conte so far has got his tactics spot on, Barca have created nothing. Despite the pundits overreacting everytime he touches the ball, Messi has done very little in terms of effecting the game, whilst Suarez has barely had a kick. If I where Chelsea I'd fancy my chances 2nd half, if they continue doing what they are doing they could get the win.
to be fair he did setup paulinho for a good headed chance but yes he hasn't been his usual effective self
Chelsea just need to try and stop Barca from getting the away goal. Then they will be nicely set up for the away leg.