Oooooo...Swampy loves pies...unfortunately, most of his pie recipes are not at all healthy.
This is the simplest, best pie just to bake, especially if you aren't used to making pies. Just be careful not to overbake.
But that isn't healthy!
So...Swampy recommends that you do a fruit pie, as there ought to be some kind of fruit in season in your area. Find the nearest farmers market and try to get something fresh from the grower.
To make the pie filling, toss your fruit with some sugar (you can substitute some of the sugar for something like splenda, but keep some sugar as the fruit will react with it). Swampy suggests fresh mint or something interesting like that...depending on the fruit.
You can also contemplate what ever spices are reasonable for the fruit, such as fresh mint, cinnamon, nutmeg, or even allspice. Some deep tasting fruits you could even try tossing in a few rolled oats. You can add some lemon or lime juice to increase the tartness if need be. A pinch of salt to bring out the sweetness. Making pie filling is all about feel and taste.
In general, unless you are trying to win a contest, it might be easier to use a frozen pie crust. This is a huge time saver, plus you can find a healthy brand.