In a saucepan over medium heat, combine peach preserves, chopped jalapeño, soy sauce, lime juice, and garlic powder. Stir until well mixed and bring to a simmer.

Reduce heat and let the glaze simmer for about 5 minutes until slightly thickened. Remove from heat and set aside.

In a mixing bowl, combine salt, black pepper, and paprika. Rub the seasoning mixture evenly over the chicken breasts.

Preheat the grill to medium-high heat. Place the seasoned chicken breasts on the grill and cook for about 6-7 minutes on each side, or until the internal temperature reaches 165°F (75°C).

During the last few minutes of cooking, brush the chicken with the peach glaze.

Remove the chicken from the grill and let it rest for 5 minutes before serving. Drizzle with additional glaze if desired.