Get a Nice Handle Bar Bag to go with that and you will be good to go.. Bike Packing Bags for your handlebars
stuff your sleeping bivvy into thsat

Ortlieb's handlebar bags are very popular world wide amongst touring cyclists..
they are in the Bike packing game too, with a double ended Dry Bag like pack for handlebars..

any thing more ...than that? Bene Sugg is buy a steel fork with all the fittings for adding a Porteur Rack
to carry that Pizza..


I have a Front rack on my (steel) Bike Friday , small wheels so even an over the wheel rack is Low.

my front panniers have D rings on the lid so with a stretch net I can bring home Boxed pizzas...

You could probably wing it, putting that pizza box on top of your handlebars..





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