Place the sliced zucchinis in a shallow baking or roasting dish. Top with the lemon zest, lemon juice, olive oil and salt. Toss gently in the dish.
Roast in the preheated oven for 20 minutes. Meanwhile, chop the herbs. After 20 minutes, remove from oven and sprinkle the fresh herbs and feta cheese over the roasted zucchini. Return to the oven for five more minutes, allowing the feta to soften and the herbs to release their aromatics.