Preheat the oven to 375˚. Line a baking sheet with foil. In a large bowl, toss the carrots with the honey, olive oil, coriander seeds, cumin seeds, 1 tablespoon salt and 3/4 teaspoon pepper. Arrange them in a single layer on the prepared baking sheet.
Roast in the oven, stirring halfway through, until the carrots are tender when pierced with the tip of a sharp knife, 20 to 25 minutes. Drizzle the vinegar over the carrots and taste a tiny piece for seasoning. Serve immediately.
Leaving on the bitter skin makes carrots, which are generally very sweet, taste even better.