My friend (and neighbour) has just gone through this over the past couple of months. Her wee boy was 16m when he started getting picky with chunky or finger foods after they got back from a 7 week trip home to the UK. They decided to feed him what he would eat and keep offering bits of the other stuff. They also ate their own meals with him as much as possible (usually jsut breakfast and lunch). It lasted about 6-8 weeks, during which time he cut a couple of new molars and of course adjusted back to a new time zone.
He would sometimes ask for fruit that C was eating if he was here or if we were out and then about a week ago he asked for his Dad's noodles at lunch time and since then he's been getting back into "real" food again.
So I wouldn't necessarily get too stressed about a fussy stage. I thought blondy's suggestion was a good one too