In a large bowl, stir together the brown sugar, granulated sugar, flour, and salt.
Stir in the melted butter, eggs, and vanilla until combined.
Stir in the pecans and chocolate chips.
Pour the mixture into the unbaked pie shell. Place the pie shell on a baking sheet (so it holds its shape) and place it in the oven.
Cook the pie for 40 minutes. Check the pie at that point—if it's brown on top, place a piece of aluminum foil loosely over the top to prevent further browning.
Return to the oven for another 10 minutes (for a total of 50 minutes of baking time). The pie should be firm to the touch. If not, bake the pie for an additional 5–10 minutes.
Remove from the oven and let cool. Slice and serve with vanilla ice cream.
Notes
You can substitute your favorite chocolate chips for the semi-sweet chips, such as dark chocolate, milk chocolate, or bittersweet chocolate chips. White chocolate chips or butterscotch chips would be delicious, too! Walnuts can be substituted for the pecans, if desired. Or leave out the nuts altogether if you prefer. You can use a refrigerated pie crust (or homemade pie crust) in place of the frozen pie shell. Place the raw crust in a 9 inch pie dish and proceed with the recipe as directed.