My son was a terrible eater. He breastfed (no bottles) but didn't want to eat solids. I kept consistently offering nutritious foods -- I offered a variety of healthy food, but no junk food. He eventually started eating, but to this day (he is 30) does not eat any fruit whatsoever. Not even apple pie etc. He doesn't really care about food much and is very thin. My daughter was also very late starting solids, but once she started eating them, she ate pretty much anything.
It makes me wonder if my son might have a toe on the spectrum.