  Poor man's Majorana Bound States (MBS) arise in minimal Kitaev chains when
the parameters are fine-tuned to a sweet spot. We consider an interacting
two-site Kitaev chain coupled to a single-mode cavity and show that the sweet
spot condition can be controlled with the cavity frequency and the hopping
between sites. Furthermore, we demonstrate that photon-mediated effective
interactions can be used to screen intrinsic interactions, improving the
original quality of the MBS. We describe experimental signatures in the cavity
transmission to detect their presence and quality. Our work proposes a new way
to tune poor man's MBS in a quantum dot array coupled to a cavity.
