Place first 8 ingredients in large bowl. Toss to combine. Season salsa with salt and pepper. Cover; let stand 1 hour.
Preheat oven to 250°F.
Mix cornmeal and coriander in shallow bowl.
Sprinkle chicken with salt and pepper. Generously spray large nonstick skillet with nonstick spray.
Place skillet over medium-high heat. Coat 1 side of each chicken breast with cornmeal mixture.
Place 4 chicken breasts, cornmeal side down, in skillet; cook until golden on bottom, about 5 minutes. Reduce heat to medium-low. Turn chicken over. Cook chicken until cooked through, about 5 minutes longer.
Transfer chicken to baking sheet. Keep warm in oven. Wipe out skillet, then spray with more nonstick spray. Repeat with remaining 4 chicken breasts.
Cut chicken breasts diagonally into 1/2-inch-thick slices.
Transfer to plates. Spoon salsa atop chicken and serve.
Per serving: calories, 296; total fat, 6 g; saturated fat, 1 g; cholesterol, 96 mg.