Motion is relative, so firing a chicken at a static target is also a possibility. The trouble would be imparting and spreading enough energy through the entire

Motion is relative, so firing a chicken at a static target is also a possibility. The trouble would be imparting and spreading enough energy through the entire mass uniformly enough to have something remain. It likely wouldn't work in the real world because the result would obliterate bones resulting in something worse than Chicken McNuggets, and not cook it sufficiently long to be safe from bacterial contamination. If attempting such a feat, it would generate visible light. There's a good chance of generating some long-wave UV at the energies involved (several MJ, which would be a chicken flying at about 2 km/s. It would instantly disintegrate.)