Transfer them to a mixing bowl. Add the spices, shrimp, and oil, then stir well to coat everything in oil and spice. Note that the video shows the use of 2 tbsp. of each of the spices. This is very heavily spiced. For most people, 1 tbsp. will work just fine.
Spread the mix over one or two sheet pans making sure to keep everything in one layer. You don't want to pile this up because it won't cook properly this way.
Bake at 450 F. for 40-50 minutes, or until everything is cooked to your liking. And yes, this is a long cooking time for shrimp. If that bothers you, You can stir them in later in the baking process. But for my taste, it worked just fine.
Once finished, remove the pans from the oven, squeeze some fresh lime juice over everything, season with any additional salt and pepper you want, and serve in a tortilla with your favorite toppings.
Video
Notes
Please note that the nutrition data given here is a ballpark figure. Exact data is not possible. Data is only for the filling and does not include tortillas or toppings.