  We consider the potential of the Higgs boson pair production process to probe
the light quark Yukawa couplings. We show within an effective theory
description that the prospects of constraining enhanced first generation light
quark Yukawa couplings in Higgs pair production are similar to other methods
and channels, due to a coupling of two Higgs bosons to two fermions. Higgs pair
production can hence also probe if the Higgs sector couples non-linearly to the
light quark generations. For the second generation, we show that by employing
charm tagging for the Higgs boson pair decaying to $c\bar{c}\gamma\gamma$, we
can obtain similarly good prospects for measuring the charm Yukawa coupling as
in other direct probes.
