Related Clues:

• Baked disc of dough topped with cheese, tomato etc
• Four seasons, perhaps
• Italian fast food
• Something delivered in a box
• Italian open pie
• Pie not served for dessert
• Food often served in chains
• Takeaway detective snoring at academy
• Pie that's served hot
• Square, but not a round dish
• Square minus a little area? It's usually round
• Eg, calzone
• Not a square meal?
• First article to be cut out of square dish
• Open pie of Italian origin