Simmer chicken breasts in water to cover until almost tender. Drain and reserve the water.
In a microwave-safe dish, mix together sour cream, parmesan cheese, white wine, chicken stock, salt and lemon pepper.
Cut chicken into bite size pieces, and put in sauce mixture. Cover. Microwave on high for about 10 to 15 minutes, then on low for another 5 minutes. Make sure it doesn't burn. When sauce starts to thicken and chicken is tender, it is ready to serve.