Brush olive oil all over the pork tenderloins, then season with your favorite dry rub and about 2 tsp each salt and pepper, if your dry rub doesn't have much salt.
Optional, also cut up some of your favorite vegetables to grill, and toss with a bit of olive oil, salt and pepper, and grill alongside your pork tenderloin.
Place pork on an outdoor or indoor grill at medium high heat, close the lid and allow to grill on one side for about 10-12 minutes.
Flip the pork over and grill for an additional 5-10 minutes, until the internal temperature reaches at least 145 degrees.
Remove from the grill and cover with tin foil, and allow to rest for at least 10 minutes. This will seal in the juices and allow the internal temperature to rise to about 160 degrees.
Slice on a diagonal and serve alongside your favorite side dish and grilled vegetables.