Crisp Garlic Oven Fries with Purple Potatoes

Bahan-bahan (4 porsi)

• 2.5 lbs red (yellow and purple fingerling or baby potatoes)
• 2 tablespoons extra virgin olive oil (plus a bit more for greasing the baking sheet)
• 1 teaspoon garlic powder
• course sea salt and fresh cracked pepper to taste