Johnson joined Derby from Norwich City during the summer transfer window, and he has gone straight into their starting line-up.
And the deadline day addition says that he is loving life at the iPro Stadium, where he is enjoying linking up with the club’s other midfield options.
Johnson: "I feel I've settled in really well at this club. We've got a great combination in midfield and long may it continue for us"— Derby County (@dcfcofficial) October 29, 2015
The fact that Johnson was available in the summer was a surprise to many, as he was so important to Norwich during their promotion-winning campaign last season.
The 28-year-old was one of the Canaries' top performers as they won the Championship play-offs in 2014/15, but he was deemed surplus to requirements after they made it to the Premier League.
Derby were quick to jump at the chance to sign him once they found out about his availability, and he has quickly proved his worth since making the switch.
Johnson has already scored twice in eight appearances for Derby, and he is still to taste defeat while playing for his new club.