I wouldn't worry about it. Just keep offering. They'll eat when they're ready.
Toddlers are NOTORIOUS for not eating. But somehow, they seem to grow and thrive and develop just fine. It used to drive me BATTY how little my DD1 ate, but she's taught me with time to just let it go.
It's all you can do, really. Just put good tasty inviting food in front of them several times a day, and let them decide when they're ready for it. I think they're more likely to turn picky if you start making a struggle out of it, or worrying too much. Limit the junk, limit empty-calorie fluids like juice, and let them follow their own appetite.
On the other hand, if you suspect that the child really might have oral issues leading to food-refusal, it's not a bad idea to talk to a speech therapist or occupational therapist about it. Some kids really do have trouble learning to chew and swallow food. Does he eat ever, some foods, or in other situations other than at the table? If you know he is ABLE to chew and swallow, then I'd call it toddler pickiness and not worry a bit. If he's never able to handle solid food, in any situation, then I might look for a referral.
me , he , my three , , and -- and the one we lost