In a large bowl, whisk together the lime juice, lime zest, olive oil, garlic, chili powder, cumin, and salt. Add the uncooked shrimp to the marinade, cover with plastic wrap, and refrigerate 30 minutes.
Add shrimp to a large heated pan over medium heat, and cook until pink and opaque. Remove from heat and stir in cilantro. Serve immediately with lime wedges.
