Slice the pork tenderloin into 1-inch thick medallions and season both sides with sea salt and black pepper.
Heat the extra virgin olive oil in a large stainless steel or cast iron skillet over medium-high heat until shimmering.
Place the pork medallions in the skillet and sear for 3-4 minutes per side until a golden crust forms and the internal temperature reaches 145 degrees Fahrenheit.
Remove the pork from the skillet and set aside on a plate to rest.
In the same skillet, reduce heat to medium and add the toasted sesame oil, minced garlic, and grated fresh ginger, sautéing for 30 seconds until fragrant.
Place the halved baby bok choy cut-side down into the skillet and cook for 3 minutes without moving them until the edges are beautifully caramelized.
Add the tamari to the pan to deglaze, using a wooden spoon to scrape up any browned bits, and toss the bok choy to coat.
Plate the pork medallions alongside the caramelized bok choy, drizzling any remaining pan sauce over the meat and garnishing with sesame seeds.