In a bowl or ziptop bag, combine the chicken with cilantro, lime, salt, garlic powder, onion powder, and oil. Let marinate for at least 30 minutes, up to 2 hours.
When ready to cook the chicken thighs, heat a large skillet over medium-high heat with a line coating of oil. Once hot, add the chicken and cook for 5-7 minutes on each side, or cooked through.
Set the chicken aside to rest for 5 minutes. While the chicken rests, whip down the skillet and warm up the tortillas over medium heat.
After the chicken has rested for 5 minutes, cut the chicken into bite-sized pieces. Alternatively, you can shred it.
Assemble your tacos with your favourite toppings.