In a medium mixing bowl, whisk together the olive oil, minced garlic, chopped jalapeño, lime juice, lime zest, cumin, smoked paprika, salt, and black pepper. Add the chicken breasts to the marinade, ensuring they are well coated. Cover the bowl with plastic wrap and refrigerate for at least 30 minutes or up to 2 hours to enhance the flavors.
Preheat your grill or a large skillet over medium-high heat. Once hot, remove the chicken from the marinade and transfer it to the grill or skillet. Cook for approximately 6-7 minutes on each side, until the chicken is fully cooked through and reaches an internal temperature of 165°F (75°C). Once done, remove the chicken from the heat and let it rest for 5 minutes.
After resting, use two forks to shred the chicken into bite-sized pieces, ensuring the juices are well distributed.
In a dry skillet set over medium heat, warm each corn tortilla for about 30 seconds on each side, or until they are warm and pliable. Keep them covered with a clean kitchen towel to retain warmth.
Take a warm tortilla and generously fill it with the shredded chicken. Top the chicken with a handful of shredded lettuce, a scoop of diced tomatoes, and a sprinkle of red onion. Finish with a sprinkle of crumbled feta cheese and a few fresh cilantro leaves for added freshness.
Arrange the assembled tacos on a colorful serving platter. Serve immediately alongside lime wedges for an extra burst of citrus flavor.
Notes
Serve with lime wedges and consider adding avocado salsa for extra flavor.