singled out captain for criticism after the west Londoners lost 4-1 to on Saturday.
James was sent off in the 73rd minute and largely struggled against Newcastle’s Anthony Gordon in the Premier League clash at St James’ Park.
The England international has started Chelsea’s last three top-flight games after returning from a hamstring problem but will now serve a one-match suspension.
Speaking after his former club Newcastle beat the Blues, Shearer told BBC Radio 5 Live: ‘Chelsea were terrible in the second half.
‘They were made to look terrible by Newcastle, who put them under pressure.
‘Kieran Trippier played really well, Reece James didn’t. Anthony Gordon gave him a really tough time and he got frustrated.
‘Gordon seems to be really enjoying his time at Newcastle. A bit of frustration from James and he got sent off.’
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‘It was our worst game of the season,’ Pochettino told Premier League Productions. ‘We did not read the game from the beginning. We did not play how we should play, we showed a lack of intensity and energy.
‘Even after we scored, at 1-1, it was a chance for us to force them to play deep, but it was so easy for Newcastle. That is why I am so upset with the performance.’