An on-demand robotic food 
assembly line can include one or more conveyors and one or more robots, operable to assemble food items in response to received orders for food items, and one or more ovens operable to, for example, partially cook assembled food items. The on-demand robotic food 
assembly line can optionally 
package the assembled and partially 
cooked food items in packaging, and optionally load the packaged partially 
cooked food items into portable cooking units (e.g., ovens) that are optionally loaded into racks that are, in turn, optionally loaded into delivery vehicles, where the food items are individually cooked under controlled conditions while en 
route to 
consumer destinations, such the cooking of each 
food item is completed just prior to arrival at the 
consumer destination location. A dynamic fulfillment 
queue for control of 
assembly is maintained based at least in part on estimated 
transit time for orders.