I used to work with a gentleman named Lenny when I did airport security (back when they hired retirees & college students & paid $5/hour). The whole crew talked about food occasionally when we were waiting for passengers, and I told him about my genius new idea of slicing up leftover baked potatoes and frying them up for breakfast. Lenny said, "Oh, HOME FRIES! That does sound good. I haven’t had those in years. I could do that!" I thought it was cool that my idea was already a thing & even had a name!
So I have no credentials other than that, but this is the way I make them. I think my & your recipes are different, after I reread your post. Uncovered pan. I mean if you get impatient you can put the lid on but for no more than a minute. The condensation from the lid of the pan should NOT be dripping on the potatoes, or you will never get them crispy.
Leftover baked potatoes, skin on, sliced, then quarter the slices
butter or oil ( half a tablespoon or so, this really does depend on how many potatoes you have; use a light hand, you can add more as needed)
Heat butter or oil in pan until grease is hot. Add potatoes in pan in one layer, let cook for about 5 minutes, salt them & pepper them & any other seasoning you want to add (old bay, garlic powder, morton’s natural seasonings, SPIKE goes great with potatoes) do it, then flip them so the other side can brown. Add more butter now if you are going to, so it can soak into the uncooked side & help them brown. You can also stir them during the cooking, just make sure they are nice & brown. You want them crispy.
These days I don’t have time to bake a potato properly (400 degree oven for an hour), so I have been sticking them in the microwave, then cutting them up & frying them right away. Makes for a quick easy breakfast if you do it the night before. The only problem I have had with this is the sampling of them. [;)]