Preheat oven to 425 degrees. Spray a large baking pan with nonstick spray.
In a zip top bag (or medium bowl), combine potato, onion, olive oil, and spices, plus salt and pepper to taste. Mix well.
Spread seasoned potatoes on baking pan in a single layer.
Add jalapeno to baking pan; lightly drizzle with olive oil.
Roast potatoes and jalapeno for 15 minutes.
Remove from oven; flip potatoes and jalapeno, then return to oven.
Bake until potatoes are cooked through, about 10 to 15 minutes more.
Remove from oven; season with additional salt, if desired. Set aside.
Prepare eggs:
Add eggs to a large bowl. Season with salt and pepper, then beat until frothy.
As soon as potatoes are done, heat olive oil in a large skillet over medium heat.
Chop roasted jalapeno, discarding seeds, stem, and any skin that is peeling off.
Add eggs and jalapeno to skillet; cook until eggs are scrambled, stirring frequently. Remove from heat.
Assemble burritos:
Place a tortilla on a large plate; microwave for 10 to 15 seconds, or until warm.
Top tortilla with ¼ of the eggs, cheese, and potatoes.
Fold tortilla around filling. Repeat process with remaining ingredients to make 4 burritos.
Serve burritos with salsa or hot sauce, if desired.
Notes
If you have any leftovers, assemble burritos, then refrigerate in an airtight container. When ready to eat, wrap burrito in a paper towel, then microwave for one minute or until hot.