Preheat oven to 425°F. Line a large sheet pan with parchment paper or lightly grease the pan.
Place the 1 ½ pounds baby potatoes and 1 pound green beans on the sheet pan. Drizzle with 2 Tablespoons extra virgin olive oil and season with ½ teaspoon salt and ¼ teaspoon black pepper. Toss to coat and spread the vegetables into an even layer around the outer edges of the pan.
In a small bowl, combine the ½ teaspoon chili powder, 1 teaspoon cumin, ½ teaspoon garlic powder, 1 teaspoon chili powder, ½ teaspoon salt, ½ teaspoon paprika and ¼ teaspoon black pepper
Pat the 1 ½ pounds pork tenderloin dry with paper towels and rub the spice mixture evenly over the pork.
Place the pork tenderloin in the center of the sheet pan between the vegetables.
Bake for 25–30 minutes, or until the potatoes are tender and the pork reaches an internal temperature of 145°F using a meat thermometer.
Remove from the oven and let the pork rest for 5 minutes before slicing.