Assuming "that" season is 2015/2016, i'd argue Vardy became even better in the following 3 or 4 seasons. Under Puel he was insanely good given how little got created for him and then at the start under Rodgers.
For that entire period id argue he was world class under most definitions. Pace, movement, finishing off both feet and head, work rate, even his link up and 1 touch lay offs were well above average.