Preheat oven to 425°F (220°C). Wash and clean all your baby potatoes, then dry them thoroughly.
Cut them in half then into small pieces, about 1cm thick (the smaller, the crispier), adding them to a large bowl of water as they're cut (this helps reduce surface-level starch and increase crispiness). Then dry all the potatoes with a dish towel or paper towels, making sure to get off all excess water.
Make sure your lard is warm so that it doesn't solidify on the potatoes, then toss them with the fat, and slowly add in the za'atar, minced garlic, and salt.
Spread the za'atar potatoes in one layer on your baking sheet, then cook for 15 minutes.
Take your potatoes out of the oven and flip & move around all of them, then bake for another 10-15 minutes, until as crispy as desired. Serve with a simple garlic sauce, like a roasted or traditional toum.