To a large skillet, add the cracked coriander seeds, chipotle powder, cumin powder, smoked paprika and mustard powder. Toast over low heat, stirring frequently, until fragrant and just toasted, about 3 minutes. Allow to cool to room temperature, then mix with the salt.
Heat up your grill with lump charcoal, making a hot and a slow zone. Dry the pork chops with paper towels. Evenly sprinkle the pork chops on both sides with the spice mixture.
Drizzle the seasoned pork chops with olive oil, and then place them on the hot side of the grill. Cook for about 8 minutes per side to develop a nice crust, then move to the slow zone of the grill and put the lid down. Continue to cook until the pork chops reach 140 degrees F. Remove to a platter or cutting board. Let the chops rest for 5 to 10 minutes.
Meanwhile, cut the zucchini into noodles with a spiral vegetable slicer on the medium setting. Alternatively, use a Japanese mandoline or a sharp chef's knife to cut the zucchini into thin planks, then into strips lengthwise.
Toss the zucchini noodles, corn and cherry tomatoes in a large bowl with the lime juice, garlic and a drizzle of olive oil. Season with salt and pepper. Toss gently to combine, then stir in the dill and feta. Pour into a large serving bowl and serve alongside the pork chops.