Using a large skillet, add oil and heat to a medium-high heat. While the skillet is warming up, season the thinly sliced chicken breasts with the lemon pepper and Old Bay seasoning. Place chicken in the hot skillet. Do not move the chicken for 5 minutes. This will give it a nice browned crunchy texture. Flip chicken over and continue cooking until cooked thought, about 5 more minutes. Remove chicken from skillet and cut into small cube size pieces.