Cut the potatoes into large potato wedges. Place in a medium mixing bowl and cover with cold water and ½ cup of ice. Soak the potatoes for 30 minutes. Before draining, stir the potatoes to agitate them and release more of the starch. The water should now be cloudy. Drain the potatoes and place them between two kitchen towels. Dry the potatoes completely before baking (important to make sure they’re as dry as possible).
Preheat the oven to 425°F.
Prep two baking sheets with parchment paper. Place the potatoes on one of the baking sheets and add the avocado oil. Toss to combine, ensuring each wedge is coated.
Sprinkle the seasoning mixture all over the potatoes and toss to combine, again ensuring each wedge has an even coating.
Transfer half of the fries to the other prepared baking sheet. On each sheet, arrange the wedges, cut side down, ensuring ample space between each.
Transfer both sheets to the oven and bake for 20 minutes. Remove from the oven, flip all wedges, and transfer back to the oven, ensuring the tray that was on the bottom is now on the top and vice versa. Bake for an additional 15 to 20 minutes until crispy and golden.