In a non-reactive bowl, whisk together the olive oil, minced garlic, salt, and black pepper.
Add the lamb and coat with the marinade. Cover and refrigerate at least four hours or overnight.
Remove the lamb from the fridge. Adjust the oven rack to middle position and heat oven to 275 degrees Fahrenheit.
Place the chops on a rack-lined baking sheet. Cook in the oven until a meat thermometer reads either of the following, depending on your preference: 90-95 degrees for rare to medium rare (20-25 minutes) or 100-105 degrees for medium (25-30 minutes).
Heat 1 tablespoon of light olive oil (or any neutral cooking oil you have on hand) in a large 12-inch skillet over high heat, until the oil is almost smoking. Place chops in the skillet and let sear, undisturbed, until browned well (about three minutes).
Turn the chops over and continue to sear the other side until browned (about two to three minutes).
Check internal temperature if necessary and remove from heat. Move chops to a plate and cover with foil. Let rest for five to ten minutes.
While the lamb is resting, make the ladolemono.
In a small bowl, add the olive oil, lemon juice, oregano, salt, pepper, and dijon mustard. Whisk well to create a frothy vinaigrette.
Pour the ladolemono over the lamb, garnish with parsley, and serve!