Heat pan for one minute, add olive oil and garlic. Sauté the garlic for ten seconds. Add the tomatoes, olives, herbs de Provence, and zest and turn the heat down. Continue to simmer for five minutes.
Place the fish into an ovenproof dish. Season with salt and pepper. Smother the fish with the prepared tomato mixture. Roast in a pre-heated oven for 20 minutes.
Note: Delicious served over simple roasted potatoes.