Coat a baking dish with olive oil.
Place cod fillets in the dish and turn them around to coat the fish in the oil.
Season the fillets with salt and pepper, and bake for 10 minutes.
Combine Ritz cracker crumbs, panko, minced fresh parsley, minced garlic, lemon zest, and salt in a small bowl.
Add melted butter and stir to combine.
Remove the fish from the oven, pour dry white wine and freshly-squeezed lemon juice overtop.
Divide the crumb mixture evenly among the fillets.
Return to the oven and bake until the fish is just cooked through.
Serve hot with the pan juices and lemon wedges.
