You may be correct. Personally, I like to think that they subsisted on chocolate and peanut butter, but I have no evidence - except for those Reeses wrappers that were carbon dated to the Jurassic period.
Impossible! Tyrannosaurs were from the Cretaceous. Allosaurs, however, could have been chocovorous. Try to come up with some tie-in to global warming and apply for a multimillion dollar federal research grant.