Preheat grill to high heat (400° to 450°). Place a 12-inch cast-iron skillet on the grill to heat for 15 minutes.
In a large bowl, toss together green beans, tomatoes, olive oil, and ½ teaspoon each salt and pepper. Add mixture to skillet; cook, occasionally stirring, until vegetables start to blister, about 4 minutes. Remove from skillet.
In a small bowl, stir together Roasted Pecan Pepper Jelly, mint, soy sauce, and garlic. Sprinkle pork chops with remaining ½ teaspoon each salt and pepper.
Heat canola oil in skillet. Add pork chops to skillet; cook, frequently basting with marmalade mixture until a meat thermometer inserted in thickest portion registers 140°, about 3 minutes per side. Serve immediately with vegetables. Garnish with mint and sea salt, if desired.