Preheat the oven to 400°F. Grease a sheet pan or baking dish large enough to fit all of the carrots in a single layer. If needed, use two baking sheets, you dont want the carrots to be overlapping.
Place the carrots in a large bowl and toss with the olive oil, salt, pepper, thyme, and oregano.
Spread the carrots in one layer on the prepared pan or baking dish. Cover with aluminum foil, and place in the oven for 30 minutes.
Uncover and check the carrots. Ff the carrots are not yet tender, turn the heat down to 375°F and return to the oven for 10-15 more minutes until tender.
Add parsley, stir gently, and adjust salt and pepper. Serve hot, warm, or at room temperature.