There are a plethora of dining establishments in Monterey because it is rather touristy.
I recommend staying away from the overpriced restaurants on Cannery Row and heading up to Lighthouse Road to find better and cheaper food.
There are bagel shops, pizza places, seafood restaurants, whatever you want. I recommend the Cioppino, because the seafood is fresh. There is a Baskin Robbins near Breakwater Cove -- that's one of my favorite stops between dives when the weather is warm.