Preheat the oven to 375°F.

In a small mixing bowl, combine the spice blend, mustard, and ghee. Brush the mixture evenly onto the pork tenderloins.

Place a large cast-iron or other oven-safe skillet on the stovetop over medium-high heat.

When the pan is hot, sear the tenderloins on both sides until lightly browned, about 2 minutes per side.

Transfer the pan to the oven and roast the tenderloins for 15 to 20 minutes, until the internal temperature of the pork reaches at least 145°F. Garnish with coarse sea salt before serving.