Harbor City Diner offers a decent menu with large amounts of food. They're burgers are colossal, their omelettes made wtih 5 eggs, delicious gyros and more. Feature include kids eat free any day under 10, 1 child per paying adult and prime rib on Friday and Saturday nights. The diner is owned by a husband and wife from NY. She runs the front of the house and her husband cooks 90% of the meals made there.
The atmosphere is casual and comfortable. Give it a try!
I couldn't find a complete address, but if your on Wickham Road heading towards 192, it just before the Winn Dixie shopping center on the right, located next door to Sweet Tomatoes.