We just got back from Grenada and have some chow worthy recommendations.
The Aquarium at Point Selenas was our favotire. Interesting local food - great fish and the Carmalized walnut and spice parfait was amazing - I had it all three times we were there. The callallo canelloni was very good too, but I wasn't too impressed with their pumpkin soup. My husband and sister had the grilled mahi mahi and loved it.
The Spice Island Beach Resort has a lunch menu that was also very good. It was $175 US for three of us, but the food was good, especially the beef roti.
The roti at the Grenada Grand pool bar was very good as well. Nice curry flavor and the roti itself was flakey and not chewy. The other food at the Grenada Grand was fair at best.
La Belle Creole was good, but didn't live up to the reviews we have read, and the service did not match the prices. It was about $120 for the three of us.
We tried the Nutmeg in St. George and were underwhelmed. My salad was fine, but the fish sandwiches were terrible. There seemed to be a barbecue sauce that is used all over Grenada for fish chicken and who knows what else. We ran into it again at the Flamboyant hotel's restaurant. Avoid this place! It was horrible.
Our favorite things were the street food snacks. Tamarind balls, guava cheese and best of all the ginger peanuts that are sold near the cruise ship terminal.
Grenada is a beautiful, quiet island that has some decent food, but you have to hunt for it.