Preheat oven to 425 degrees. Toss the potatoes and 2 tablespoons of olive oil and season with salt and pepper and transfer to 2 sheet pans and evenly spread them out.
Roast potatoes until tender and crispy on the edges, about 30-40 minutes, check on them and give them a toss halfway through.
Heat remaining oil in large skillet over medium-high heat. Add garlic and cook 30 seconds. Add potatoes. Heat for about 2 minutes just to cook the garlic and then add herbs; sprinkle lightly with salt and pepper. Transfer to bowl and serve.