1. Toast corn in heavy skillet over medium-high heat, stirring often, until lightly blackened (4-5 minutes). Set aside.
2. Sprinkle turkey on both sides with chili powder. Heat 1 tablespoon oil in large skillet over medium-high heat. Saute turkey until cooked through, flipping once (1-2 minutes per side). Set aside.
3. Add remaining 1/2 tablespoon oil to skillet. Saute pepper and onion until just soft (3-5 minutes). Increase heat to high and add toasted corn. Saute until peppers begin to brown (3-5 minutes).
4. Stir in cilantro and lime juice. Season salsa with pepper and transfer to medium bowl. Return turkey to skillet and heat through (1-2 minutes). Spoon salsa over turkey and garnish with lime wedges to serve.