In a large bowl, toss together the chicken breasts with the lime juice,olive oil, minced garlic and the spices. Toss until well combined. Either cook immediately or place in the fridge for 10-15 minutes to marinade while making the beef tacos.
To cook the chicken, heat a nonstick skillet over medium high heat. Once the pan is hot, add the chicken breasts all at once, spacing them out. There should be enough oil in the marinade, but if you feel you need it you can add a little olive oil before adding the chicken to the pan.
Cook for a good 5-6 minutes or until golden brown on one side, then flip and continue cooking for another 5 minutes or until golden brown on both sides and completely cooked through.
Let chicken breasts rest for 5 minutes, then slice. This is your taco chicken ready!