  Pionic contributions to static nucleon properties are calculated in a chiral
extension of the colour-dielectric model. The pion field and residual gluon
field are treated perturbatively. It is shown that with a simple choice for the
energy of the scalar confining field and in the chiral limit, the system of
equations describing the bare soliton and the perturbative pion and gluon
fields may be cast in a dimensionless, parameter free form for large glueball
mass. This enables a formula for the masses of the nucleon and delta including
leading order pionic and gluonic contributions and corrections for spurious
centre-of-mass motion, valid for a wide range of input parameters determining
the bare soliton solutions, to be derived. A further consequence of the scaling
behaviour is that pionic contributions to nucleon properties, calculated using
the methods of the cloudy bag model, are insensitive to the soliton parameters,
once the size of the soliton is fixed. The model results are very similar to
those of the cloudy bag model but the predicted masses are about 20\% too
large, and the pionic contributions to charge radii are underestimated.
