In a large skillet, heat the olive oil over medium heat.
Add the diced onion to the skillet and sauté for about 3-4 minutes until the onions are translucent. Then, stir in the minced garlic and cook for an additional 1-2 minutes until fragrant.
Add the ground chicken to the skillet. Use your spatula to break it up and cook until it's no longer pink, approximately 5-7 minutes.
Sprinkle in the taco seasoning and pour in the water. Stir well to combine and let it simmer for about 5 minutes, allowing the flavors to meld and the mixture to thicken slightly.
While the chicken mixture is cooking, warm the corn tortillas in a separate pan over medium heat for about 30 seconds on each side or until they are pliable.
To assemble, take a warmed tortilla and fill it with the ground chicken mixture. Top with shredded lettuce, diced tomatoes, shredded cheddar cheese, and chopped cilantro.
Serve the tacos with lime wedges on the side for a fresh squeeze of lime juice to elevate the flavors. Enjoy your homemade Ground Chicken Tacos!