Costco shoppers are buzzing about a  food court staple  found in the frozen foods aisle — and some say it might be even better than the original. The Washington-based warehouse club’s cult-favorite chicken bake, long considered a must-order alongside the $1.50 hot dog and oversized pizza slices, is gaining fresh attention after appearing in the frozen aisle at some locations, sparking a debate among fans over which version comes out on top. The Kirkland Signature frozen chicken bake, sold in a