Prepare the Pork: Working with one pork chop at a time, use a paring knife to cut a 1-inch opening in the side. Through this opening, continue to cut a large pocket inside the center of the chop for the filling; use your fingers to help enlarge the pocket if necessary.
Repeat with the remaining chops.
Brine the Pork: Combine 2 cups of water, 4 tsp baking soda, 1 tbsp palm sugar, and 1 tbsp sea salt in a large container.
Add the chops, ensuring they are submerged, and refrigerate for 30 minutes.
Preheat Oven: Adjust an oven rack to the upper-middle position.
Place a rimmed baking sheet on the rack and preheat the oven to 475°F (245°C).
Sauté Aromatics: Heat 1 tsp coconut oil in a 12-inch nonstick skillet over medium heat until shimmering.
Add the fennel, shallot, and 0.25 tsp sea salt.
Cook until lightly browned, about 5 minutes.
Cook Filling: Stir in the minced garlic and cook until fragrant, about 30 seconds.
Stir in 2 tbsp dry white wine and cook until it evaporates, about 1 minute.
Stir in the 6 oz (170 g) of baby spinach and cook until just wilted, about 2 minutes.
Finish Filling: Transfer the spinach mixture to a bowl and allow it to cool for 5 minutes.
Once cooled, stir in the 1.5 oz (43 g) crumbled cheese and 0.25 tsp lemon zest.
Season with sea salt and pepper to taste.
Dry and Stuff Chops: Remove the pork chops from the brine, rinse them thoroughly, and pat them completely dry with paper towels.
Using a spoon and your fingers, gently stuff the spinach filling into the pocket of each chop.
Season Chops: Combine the 1 tsp crushed fennel seeds, 1 tsp ground coriander, 0.5 tsp ground cumin, and 0.5 tsp pepper in a small bowl. Rub this mixture evenly over all sides of the stuffed chops.
Cook Chops: Spray both sides of the chops with vegetable oil spray. Carefully place the chops on the preheated baking sheet.
Bake until the pork registers an internal temperature of 145°F (63°C), which should take 10 to 14 minutes. Remember to flip the chops halfway through the cooking time.
Rest and Serve: Transfer the cooked chops to a carving board. Tent them loosely with aluminum foil and let them rest for 5 to 10 minutes before serving.