Whisk together 2 tablespoons oil, lime juice, garlic paste, salt and pepper to taste. In a non-stick skillet, heat remaining tablespoon of oil over moderately high heat until hot but not smoking and saute corn, stirring, until deep golden, about 4 minutes. Add corn and remaining salsa ingredients to bowl and toss well.
Pat chicken dry and season. On a plate stir together cornmeal, paprika, cayenne and other spices, then press chicken into mixture, coating both sides. In a skillet, heat butter over moderately high heat until foam subsides and saute chicken until golden and cooked through, about 5 minutes on each side. Serve chicken with salsa.