Dry brine the chops: Season the pork chops all over with the kosher salt and black pepper. Set uncovered on a rack in the fridge for at least 45 minutes, ideally overnight. Bring to room temp about 30 minutes before cooking.
Make the chimichurri: Finely chop the parsley, chives, and garlic together (or pulse briefly in a food processor - don't puree). Transfer to a bowl and stir in the red wine vinegar, lime juice, olive oil, red pepper flakes, and salt. Taste and adjust acid and salt; it should taste bright and slightly sharp.
Render the pancetta: In a cold cast-iron skillet, add the pancetta and cook over medium-low heat, stirring occasionally, until crisp and the fat has rendered, about 8-10 minutes. Remove pancetta with a slotted spoon to a paper-towel-lined plate; reserve the rendered fat in the pan.
Reverse sear the pork: Preheat oven to 250°F. Place the brined chops on a rack over a sheet pan and cook until an instant-read thermometer reads 115-118°F in the center, about 25-35 minutes depending on thickness. Rest 5 minutes, then sear hard in the reserved pancetta fat over high heat, about 90 seconds per side plus the fat cap, until deeply browned and internal temp reaches 140-145°F. Rest 5 minutes before plating.
Cook the grits: Bring the water or stock to a boil, whisk in the grits, reduce to a low simmer, and cook, stirring often, 20-25 minutes until creamy. Stir in the butter, and grated Manchego until melted and smooth. Season with salt. Keep warm, adding a splash of water if they tighten up.
Brown-butter the corn succotash: In a skillet, melt the butter over medium heat and cook until it foams, then turns nutty and golden brown, about 3-4 minutes. Add the shallot and cook 1 minute, then add the corn kernels and lima beans. Cook, stirring, 4-5 minutes until the corn is just tender with a slight bite. Season with salt and stir in a spoonful of the reserved pancetta fat.
Plate: Spoon the warm grits onto each plate in a circle. Set the seared pork chop on top. Spoon the brown-butter succotash around the grits. Scatter the crispy pancetta and Fresno chile rings over the chop. Spoon the corn chimichurri generously around the plate. Finish with the chopped chives.