A slice of custard pie has only 220 calories, less than most candy bars. Pumpkin pie has 323 calories in a slice. Cherry pie is about 304 calories. Apple pie is similar to cherry, as is peach pie. Of course bigger slices, bigger calories. Then we get into coconut custard pie, which is 270 per slice. But let's go the bad boys of pie - coconut cream pie slice is 425. Chocolate cream pie is about 380. But the grandaddy of bad boy pies is, of course, pecan - one slice is 456.