Preheat the oven to 400 degrees F.
Pour the tomatoes into a large bowl and break apart using a pair of
kitchen shears or your finger tips. Add the zucchini, parsley, cheese,
olive oil, garlic, spices, salt, and pepper. Stir to combine.
Meanwhile, bring the vegetable broth to a boil in a medium
saucepan over high heat. Add the orzo and cook for 4 minutes. The orzo
should be only partially cooked. Use a fine mesh sieve to transfer the
orzo to the large bowl with the other vegetables. Stir the orzo into
the vegetable mix to combine. Transfer the warm vegetable broth to a
3-quart baking dish.
Slice the tops off the peppers and remove all ribs and seeds. Cut a very thin slice from the base to help the peppers stand up.
Place the peppers in the baking dish with the warm vegetable
broth. Spoon the orzo mixture into the peppers. Cover the dish with
foil and bake for 45 minutes. Remove the foil, sprinkle the top of each
pepper with cheese and continue baking until the cheese is golden,
about 15 minutes. Remove from the oven, carefully transfer the orzo
stuffed pepper to a serving plate.