  We consider the scaling behavior of circuit complexity under quantum quench
in an a relativistic fermion field theory on a one dimensional spatial lattice.
This is done by finding an exactly solvable quench protocol which asymptotes to
massive phases at early and late times and crosses a critical point in between.
We find a variety of scaling behavior as a function of the quench rate,
starting with a saturation for quenches at the lattice scale, a "fast quench
scaling" at intermediate rate and a Kibble Zurek scaling at slow rates.
