A method for monitoring cooking in an oven appliance includes drawing cooking vapors or gases from a cooking chamber to a fluid analysis assembly of the oven appliance during a gas or vapor analysis cooking cycle, determining a cooking status of the food item within the cooking chamber with the controller of the oven appliance based upon a response pattern of a plurality of fluid sensors of the fluid analysis assembly to the cooking vapors or gases during the gas or vapor analysis cooking cycle, and activating an alert with the controller of the oven appliance when the cooking status of the food item within the cooking chamber is a particular cooking status.