I'll have to do a little tutorial on making peppers. But these food links will give you some idea of what you can put on your pizza proctor tables. Until then you can read the bit of nattering I did on this Mexican Food in a Jar on the Clay Art list.
Review of Mini Food in a Jar for more examples of mini scenes in recycled jars.
c,
Avocado
Group Page
Bread
Group Page
Purple Onion, Tomato and Lettuce
Sliced
Mushrooms