Oven to 400F.
Toss tomatoes, olives, garlic, zucchini, oil, oregano, salt in a baking dish. Roast 15 minutes until the tomatoes start to burst.
Push everything aside, lay the trout in skin-down. Spoon some of the tomato mixture over it.
Back in for 10 to 12 minutes. Done when it flakes easily.
Lemon and herbs over the top.
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