Prepare grill to medium-high heat.
Combine preserves, vinegar, chile paste, soy sauce, and 1/4 teaspoon salt, stirring with a whisk.
Sprinkle pork with 1/4 teaspoon salt and pepper. Place pork on a grill rack coated with cooking spray; grill 18 minutes or until thermometer registers 160° (slightly pink), turning occasionally and basting frequently with fig mixture. Garnish with fresh chives, if desired.
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