In the end Villa were slightly fortunate to escape without shipping double figures as Brad Guzan made several fine saves - including one to keep out Lucas Piazon's penalty.
Lambert told the club website: "Everything that could go wrong went wrong. We have been on a really good run but we got beaten up today by a really good side. We were second best.
"We never turned up. We have been beaten pretty heavily. But we were second best all over In the second half it could have been more to be perfectly honest. All credit to Chelsea, they beat us up."