SEASON FINALE: Part 1 of 2. Tonight’s installment sends the finalists to Hawaii, which is one reason I’ll watch. (Someday, I swear, I’ll actually go there, instead of just wearing its shirts and listening to its slack-key guitar music.) Another reason: the mystery ingredient around which the chefs must build their meals is that old Monty Python musical favorite: Spam, Spam, Spam, Spam, Spam, Spam… In other words, tonight’s Top Chef features Spamalot.