Think about this (weekend project) -
1) x eats a full rotissiere chicken and (by some definitions of Karma) x is reborn as a chicken. But for the whole rule to play out, x the chicken has to be slaughtered and eaten up by someone. So if y is that person who eats the chicken, did y really have a choice in the matter? x the chicken was predestined to be eated by someone and that was unavoidable and theefore y eating the chicken was unavoidable too. y is reborn as a chicken next and is eaten by z and the sequence goes on forever.
2) Why is it that the lion does not accumulate bad karma on killing the deer, but a human does? Do we have any scriptural evidence stating that the lion does not accumulate bad karma?
3) Riverwolf, et al., were of the opinion that karma does not work this way. Dawood Ibrahmin will not suffer for his murders and the chicken eater will not be reborn as a chicken. That is, karma is not a justice system.
Connecting meat-eating to bad karma is a non-trivial matter. The connection raises more questions than it answers.