I'm often asked how I make my jacket potatoes taste so good.
If possible, I prefer to use red potatoes, the Albert Rooster ones are particularly good.
Firstly, I pierce the potatoes a couple of times and then microwave for around 5-10 mins, depending on the size and no.of potatoes I'm cooking.
Then I smother them in oil, and add salt and pepper.
Depending on time constraints, etc, they then either go into the airfryer (sitting directly on the little grill plate) at ~190°C for around 30 mins until nice and crispy and soft inside.
Or, they go into the oven at 180° (fan), directly onto the metal shelf for about 90+mins, or so until crispy outside and soft inside. If needed, I'll turn up the oven to 200° for the last 20 mins to make sure the skin is really crispy.
I sometimes use a low and slow method, if I have plenty of time, whereby they go in the oven at 150° for a few hours until cooked through and then I turn the temp up to 210°C to get the crispy skins. This takes around 15-30mins. Again, they go directly onto the shelf and are smothered in oil and then salt and a little pepper.
Honestly, imo, the oven produces the best results, but the air fryer does a pretty good job, too.
Don't forget, though, that your oven may produce better results at slightly different temperatures to mine, so play around with the temperature a bit, if they don't come out right at these temps.