Conor Washington was first to test home keeper Luke McCormick as the visitors surged forward on 16 minutes.
McCormick had to keep out a Washington angled shot on 43 minutes after the County winger was sent away down the right by Chapman's incisive, defence-splitting pass from the centre circle.
Washington fired just over at the start of the second half as County continued to make the most of their superior possession.
Ismail Yakubu looked set to convert from close range after a fine cross from Ryan Jackson, which acted as a spur for the home side, with danger man Alessandra firing high and wide when well placed.
- Lewis Alessandra
- Adam Chapman