Preheat oven to 400 degrees F. Spray a heavy nonstick skillet with cooking spray and place over medium-high heat. Brown chicken breasts on both sides and transfer to an ovenproof dish. Brush with barbecue sauce and place in oven for 10 - 15 minutes to finish cooking.

In a shallow dish, beat egg white and 2 Tbsp water. In a second shallow dish, combine flour, cornmeal, salt, pepper and a pinch of sugar. Spray nonstick skillet well with cooking spray and place over medium-high heat. Dip tomato slices in beaten egg white and coat with cormneal mixture. Cook until brown and crispy.

When chicken breasts are no longer pink inside, place on dinner plates along with fried green tomatoes.