  In this paper, the possibility to have new physics is considered at the scale
of the electroweak symmetry breaking (EWSB) in a completely new framework. A
new non-standard minimal chiral fermion extension of the Standard Model (SM)
which renders the complete model free from anomalies is included. The new
fermionic matter coupled with scalar leptoquaks (SLQ) developing new signals
for exotic fermions that could be evaluated in the Large Hadron Collider (LHC).
Analysis based on the cross-section final states shows that the channels
$D_{-1/3}\overline{D}_{-1/3}\rightarrow jj+\notin$ and
$D_{-1/3}\overline{D}_{-1/3}\rightarrow 2l^{-}2l^{+}+jj$ have an apparent
narrow window $M_{D_{-1/3}}\sim 240- 300$ GeV still allowed by direct and
indirect constraints and then interesting for analysis to the new run of the
LHC.
