Yes, you can fix chipped enamel by purchasing a food-safe enamel repair kit, but there seems to be no such kit available for purchase. You can also look for a repair store in your area that handles chipped enamel cookware. They may have just the right tools for the job.
Unfortunately, chipped enamel is a part of this type of cookware, which is why it always a good idea to get a piece that has some type of warranty along with it. This will alleviate a little of the frustration that these pieces of cookware tend to bring to the kitchen.