Baking with regular skillet vs. cast iron for apple pie
Technically, yes, though the crust will likely be less brown and evenly brown than if you use a cast iron skillet, especially if the sides of your regular skillet are thinner than the base.  If that is the case, the sides will be less brown than the base of the pie.

You might also have to adjust the cooking time on the recipe as well, so if you're a stickler with following a recipe to the "T", then I'd ask someone to borrow their cast iron skillet :)