I got some fruit on mine early, but since the weather changed they've just sat there as tiny green marbles anyway!
Same with the early chillis. Flowers now either aren't appearing or if they do they aren't setting fruit as the temperatures are proabably just too low.
I'm not really having to water anything even in the greenhouse. I've probably watered the tomatoes & chillis in their pots once a month, if that. They just aren't drying out.
Still time for it all to change I reckon.