The question that remains in my mind is whether or not the chicken's parents were equally delicious. If so then everything actually tastes like some likely extinct chicken precursor. Mmmm...chicken precursor...
Now this is a question scientists should persue. I mean, what if it's MORE tasty than chicken?
But - there is still a possibility that there once was a bird who was "almost" a chicken (in a DNA sense), and it 'somehow' got some of its genes changed (radioactivity maybe) so that it became the "first chicken". Note that this potential "first chicken" would NOT have needed all of it's cells dna changed, just one cell - the one that went to make up the next generation of chickens. At what percentage of cells having the chicken dna do you call a bird a chicken?
I measure a chicken by whether or not it can end up in a bucket at KFC.
Also note that, assuming your mutated chicken is chicken enough for KFC, your example is explicitly covered in option #2, which uses the definition of egg being defined as an egg laid by a chicken
