3 year old stopped eating proper food

[Fishwifey]

Today for lunch he only ate a couple of McDonald’s nuggets! Thought that would entice him. He’ll eat crap(chocolate, crisps, cake-all the fun stuff!) any time of day. Has pancakes or cereal for breakfast. Won’t eat chips or any sort of potato based food(besides crisps, of course).
He’s still a happy, active little guy. He’s put about 1.5lb on in 6 months. He’s 2stone 2lb now.
Any suggestions? Is this just a phase?

He eats cereal and pancakes and chicken nuggets, cakes, chocolate and crisps. Not great but not a disaster either at his age. Food is fuel.

Build on the positives and offer usual favourites enriched with nutrition where possible. Eg Banana or greens in a homemade chocolate cake, mashed fruit in pancake mix, raisins with cereal? Fruit / veg fondues. Pizza base or ice cream made using potato. Try blended soups with Goldfish crackers.
Keep offering a broad selection (even things you assume he won't like or has rejected before) and be imaginative with presentation. Model good behaviour, eating and cooking together.
Try and avoid creating a hierarchy of food (eg finish your peas and you can have a chocolate= peas are not something to be enjoyed, chocolate is a treat). It's so tempting but resist.
Keep at it. It won't last forever....

Thanks selly. He loves bananas and apples so I tend to try and give him those as a snack rather than junk.

I’ve had a very fussy eater but go about it differently, I definitely haven’t put extra pressure on myself by presenting food imaginatively

Have you read Help! My Child Won’t Eat? Also, what do you do when he refuses a meal? What kind of snacks is he having and how often?

That sounds like a great book.