The competitive foursome's week features an undercooked chicken, a 'busty' party trick, and a super hot chilli-eating challenge.Ultra-confident Sam Smith is positive he's got the winning menu, glamour model Polly Guy sets out to prove that she's more than just a pretty face, no-nonsense nutritionist Caroline Seamen has high standards when it comes to food, and bank manager and part-time DJ Richard Pearce doesn't hold back when it comes to handing out criticism.