I wouldn't have thought that the 'chaff' (Window) dispenser would have been positioned within the nose area, largely because there's the possibility that chaff could hit the propellor or other aircraft equipment whilst being dispensed.
As GBZ suggests, the flare chute was initially used for dispensing Chaff, although that later modifications might have been introduced to position it elsewhere... more than likely within a similar area, as the Chaff would then have an uninterupted exit from the aircraft.
TCF