Step 1

Heat the oven to 425 degrees F and arrange a rack in the middle.

Step 2

In a small bowl, combine the oregano, sumac, and cumin.

Step 3

In a baking dish or sheet-pan, arrange the tomatoes, mushrooms, bell peppers, and 4 to 5 whole garlic cloves. Nestle the chunks of feta in between. Sprinkle with 1 ½ teaspoons of the spice mixture and a good pinch of kosher salt and black pepper. Add a few sprigs of fresh thyme. Drizzle with 1 to 2 tbsp olive oil.

Step 4

Place the sheet pan in the heated oven on the center rack. Bake for 5 to 10 minutes until the veggies are softer.

Step 5

Meanwhile, pat the fish dry and season on both sides with kosher salt and black pepper and the remainder of the spice mixture.

Step 6

Carefully remove the sheet pan from the oven and add the fish in with the veggies and feta.

Step 7

Cover the sheet pan with foil and return to the center rack of the heated oven. Cook for about 10 minutes or until the fish is cooked through and flakes easily. Remove from the oven and immediately squeeze lemon juice onto the fish.