Preheat your oven to 425°F (220°C). Line a baking sheet with parchment paper.
In a large bowl, whisk together olive oil, Dijon mustard, honey, garlic powder, dried thyme, salt, and pepper.
Add halved baby potatoes to the bowl and toss until well coated.
Spread the potatoes out on the prepared baking sheet in a single layer.
Roast for 25–30 minutes, flipping halfway through, until golden and crispy on the edges.
Garnish with fresh parsley before serving. Enjoy hot!