Mix the spice rub: combine seasoned salt, garlic powder, onion powder, 1/2 teaspoon smoked paprika, dried thyme, and black pepper in a small bowl.
Pat pork chops completely dry with paper towels. Drizzle with 1 tablespoon olive oil and rub over both sides. Sprinkle the spice rub generously over both sides, pressing to adhere. Let rest at room temperature for 10-15 minutes.
If using fresh peaches, peel them by scoring an X on the bottom, blanching in boiling water for 30 seconds, then transferring to ice water. Slip off the skins and slice into 1/2-inch (1.25 cm) wedges. If using canned or frozen peaches, drain and pat dry thoroughly.
Heat a cast iron or heavy-bottomed skillet over medium-high heat for about 2 minutes. Add the remaining 1 tablespoon olive oil and swirl to coat. Place the pork chops in the skillet and sear without moving for 3-4 minutes until a deep golden-brown crust forms. Flip and sear the second side for another 3-4 minutes.
Use an instant-read thermometer to check the internal temperature; pull the chops at 145°F (63°C). Transfer to a plate and tent loosely with foil. Let rest while you build the glaze.
Reduce heat to medium. Add the butter to the skillet with the browned bits from the pork. Once the butter is foaming, add the peach slices in a single layer. Cook for 2-3 minutes without stirring to caramelize, then stir gently and cook for another 1-2 minutes until softened and golden.
Add the minced garlic and cook for about 30 seconds until fragrant. Add brown sugar, balsamic vinegar, Worcestershire sauce, and the remaining 1/2 teaspoon smoked paprika. Stir and scrape the bottom of the pan to lift the browned bits into the glaze. Simmer for 2-3 minutes until slightly thickened. Remove from heat and stir in lemon juice.
Nestle the rested pork chops back into the skillet and spoon the glaze and peaches generously over the top. Return to low heat for 1-2 minutes to warm through without overcooking. Taste the glaze and adjust seasoning as needed.
Transfer the pork chops to serving plates, spooning extra peach glaze and fruit on top. Garnish with fresh thyme sprigs if desired. Serve immediately while the glaze is glossy and the pork chops are warm.