Combine the first 4 ingredients in a medium bowl. Heat 2 teaspoons oil in a large nonstick skillet coated with cooking spray over medium-high heat. Add pork, and cook for 8 minutes or until the pork loses its pink color. Remove from pan; keep warm.
Heat 2 teaspoons oil in pan coated with cooking spray over medium-high heat. Add bell peppers, garlic, and 1/4 teaspoon salt, and sauté 5 minutes or until tender. Divide pork evenly among tortillas; top each serving with 1/2 cup pepper mixture, 2 tablespoons cheese, and 2 tablespoons salsa, and fold. Serve with lime wedges, if desired.