Pat the pork tenderloin dry and season with 1 teaspoon kosher salt and ½ teaspoon black pepper.
Heat 1 tablespoon extra virgin olive oil in a large skillet over medium-high heat. Add the pork tenderloin and cook for 3 minutes without moving. Flip and cook for 3 minutes until golden brown on each side.
Bake the pork tenderloin:
Add the sliced onion and celery around the tenderloin. Sprinkle the onion and celery with a pinch of salt. Transfer the skillet to the oven for 12 to 15 minutes or until your desired internal temperature is met. I recommend cooking the pork to 135ºF.
Remove the skillet from the oven and transfer the pork tenderloin to a cutting board to rest for 5 to 10 minutes.
Cook the egg noodles and prepare the sauce:
Meanwhile, bring a large pot of salted water to a boil. Cook the egg noodles according to package directions. Drain and set aside.
Whisk together the chicken stock, Dijon mustard, and honey in a separate bowl.
Sauté the cabbage:
After you’ve removed the pork from the skillet, carefully transfer the skillet with the onions and celery to a burner and turn the heat to medium.
Add the cabbage and season with salt and pepper. Cook for 5 minutes until it softens. Add the minced oregano and parsley. Sauté for 1 minute.
Add the sauce from the bowl and bring to a boil. Reduce the heat to medium and simmer rapidly for 5 minutes to reduce the sauce slightly. Add the lemon juice and cooked egg noodles. Simmer for 1 minute. Taste and season. Turn off the heat.
To serve:
Slice the pork into thin medallions and arrange on a platter. Serve the cabbage and egg noodles around the sliced pork. Finish with fresh oregano leaves. Enjoy!