Cut a 1-inch-wide slit into the thick end of chicken breast halves, and carefully cut down to center of chicken to form a pocket. Divide cheese mixture evenly among pockets. Secure with wooden picks.
Sprinkle chicken with salt and pepper.
Heat a large ovenproof skillet over medium-high heat.
Add canola oil.
Add chicken to pan; saut 4 minutes. Turn chicken over.