Preheat oven to 375ºF.
Place a large skillet over medium-high heat with 2 turns of the pan of EVOO, about 2 tablespoons. Season the pork chops with salt and pepper, and sear them in the hot skillet until golden brown on both sides, about 3 minutes per side. Transfer chops to a baking sheet and finish cooking them in the hot oven, about 5 minutes more.
Place the pan the chops were cooked in back over the heat and add in the plums, onion, thyme, some salt and pepper. Cook until onions have softened, 6-7 minutes. Add lemon juice and honey to the pan, and stir to melt the honey. Remove the pan from heat and keep warm until the pork chops are ready.