  Blazar emission models based on magnetic reconnection succeed in reproducing
many observed spectral and temporal features, including the short-duration
luminous flaring events. Plasmoids, a self-consistent by-product of the tearing
instability in the reconnection layer, can be the main source of blazar
emission. Kinetic simulations of relativistic reconnection have demonstrated
that plasmoids are characterized by rough energy equipartition between their
radiating particles and magnetic fields. This is the main reason behind the
apparent shortcoming of plasmoid-dominated emission models to explain the
observed Compton ratios of BL Lac objects. Here, we demonstrate that the
radiative interactions among plasmoids, which have been neglected so far, can
assist in alleviating this contradiction. We show that photons emitted by
large, slow-moving plasmoids can be a potentially important source of soft
photons to be then up-scattered, via inverse Compton, by small fast-moving,
neighboring plasmoids. This inter-plasmoid Compton scattering process can
naturally occur throughout the reconnection layer, imprinting itself as an
increase in the observed Compton ratios from those short and luminous
plasmoid-powered flares within BL Lac sources, while maintaining energy
equipartition between radiating particles and magnetic fields.
