Rub the olive oil over the pork tenderloin, then pat on the adobo seasoning evenly. Let it rest for about 30 minutes to marinate.
Preheat the grill to high heat, or set the broiler on high. Season the pork generously with kosher salt.
Grill or broil the pork tenderloin on high heat for 20 to 22 minutes, turning several times, until an instant-read thermometer inserted in the center reads 145°F.
Remove the pork from the heat and let it rest for 5 minutes before slicing into 8 pieces.
Notes
This adobo pork pairs wonderfully with cilantro lime rice and grilled vegetables for a complete meal.