Looks like the age old question has been settled: 8000 year old chickens but no eggs. So I guess we now know which came first.
Archaeologists find earliest domestication of chickens in China
SHIJIAZHUANG, Oct. 16 Xinhua — Chickens began being domesticated in China about 8,000 years ago, far earlier than in the rest of the world,according to a recent study on fossils uncovered in north Chinas Hebei Province.
via Archaeologists find earliest domestication of chickens in China.