I have two boys, one who is (or was) very fussy, one who eats anything in record time. I don't agree with some of the other posts - but I'm not saying I've got the answer either. It's up to you how you handle this.
DS1 had a very bad stomach bug at about 8 months old, just as I was weaning him. He became very very difficult with his food, even scared of his food. I used to get really upset about it. His diet was pretty much based on bread, potatoes, yogurt. He was having lactose free milk as normal milk would upset his stomach.
As he was growing, he was fussy with his food but I managed to get him to eat a few good bits. He likes some fish - including the dreaded fish fingers. I basically decided to stop worrying about it and gave him only stuff that he liked. It seams to me as if his 'trust' in his food came back slowly. Mealtime was more relaxed. I would offer him a new item alongside something that he liked and praised him loads if he ate a bit of it.
Now, he is 5 years old and has a good diet with lots of fruits, fish, vegetables, and the usual sausages/fish fingers/baked beans. He loves eggs which really saved my sanity. He will not eat meat, apart from chicken.
He doesn't eat anything that he can't identify. If I'd try to give his let's say couscous, he would not eat it even if he was very very hungry. He could easily skip a meal or eat very very little.
I also started thinking that if he'd eat breakfast plus one good meal it was great. Not two. So he has one good meal, and the other meal is a sandwich, or a boiled egg with soldiers, or baked beans on toast.
He now has school dinners two days a week and he is happy to try new things. He is still in the 'fussy' category but I don't mind, I know that he has a good diet.
So basically, I think that you can handle this in many ways and there are no right or wrongs. I just feel that people who have 'good eaters' don't understand what it feels like to have a child who refuses to eat. I have both, a good eater who will eat anything all day long, in record time, and one who doesn't. I know it feels terrible when someone says 'well MY kids eat ANYTHING you see...' blah blah blah. Don't mind them. It's hard enough as it is.
One thing that helped DS was to invite his friends around for tea. He would see that it's normal to eat and to enjoy food!