Let’s bring this dish to life with simple and flavorful steps:

1. Start by marinating the chicken. In a large bowl, combine the minced garlic, olive oil, smoked paprika, chili powder, ground cumin, lime juice, salt, and pepper. Add the chicken thighs and toss to coat. Let it marinate for at least 30 minutes in the refrigerator to soak up all those wonderful flavors.
2. Preheat your grill to medium-high heat. Once hot, place the marinated chicken on the grill. Cook for about 6-7 minutes on each side, or until the chicken is cooked through and has lovely grill marks.
3. While the chicken is grilling, prepare the toppings. In a small bowl, mix the sliced red onion with a splash of lime juice and a pinch of salt. This quick pickling process will bring out the onion’s sweetness.
4. Once the chicken is done, let it rest for a few minutes before slicing it into strips. This helps retain the juices and keeps the chicken tender.
5. Warm the flour tortillas on the grill for about 20 seconds on each side. This enhances their flavor and gives them a nice, soft texture.
6. Now, assemble your tacos! Place a few strips of chicken on each tortilla, top with the pickled red onion, avocado slices, and a generous sprinkle of fresh cilantro.
7. Serve immediately, and watch as your family and friends delight in this vibrant, mouthwatering creation!