This paper considers a new approach to construct a feedback controller that stabilizes a front line solution of a nonlinear parabolic distributed (reaction-diffusion) system in a planar domain. The controller incorporates several space-dependent actuators that respond to sensors located at the front position. Sensor numbers and its locations are chosen by the multivariable root-locus technique for the finite-dimensional approximation of the original PDE model. The concept of finite and infinite zeros of linear multidimensional systems is used. The theoretical results are confirmed by computer simulations.