Wash the potatoes thoroughly to remove dirt. Use chopsticks on both sides of the potato to prevent cutting all the way through when slicing.

Melt 1 tbsp butter in the microwave for about 10 seconds. Mix it with salt and parsley powder to create the seasoning.

Brush the seasoning mixture onto the sliced potatoes.

Cook the potatoes in the air fryer at 180°C (356°F) for 20 minutes. Check the status and cook for an additional 12 minutes if needed.