Heat oven to 425°F. Pulse bread in a foodprocessor until coarse crumbs form.
Heat2 tablespoons oil in a large ovenproof skillet overmedium-high heat.
Add breadcrumbs. Cook,stirring often, until golden and crisp, about3 minutes; season with salt and pepper.
Transfer mixture to a bowl, add parsley andoregano; toss to combine. Wipe out skillet.
Heat 1 tablespoon oil in same skillet overmedium-high heat.
Add shallot and chorizoand cook, stirring often, until chorizo is justcrisp, about 2 minutes.
Transfer to a bowland mix in vinegar; season with salt andpepper. Wipe out skillet.
Heat remaining 1 tablespoon oil in same skilletover medium-high heat. Season cod withsalt and pepper and cook until bottom sidebegins to turn opaque, about 3 minutes.
Transfer skillet to oven and roast until fish iscooked through, about 5 minutes longer.
Serve cod topped with chorizo mixtureand toasted breadcrumbs.
DO AHEAD: Breadcrumbs can be made8 hours ahead. Store airtight at roomtemperature. Toss with herbs just beforeserving.