Allow chicken to come to room temperature and cut in half lengthwise. Season with salt, pepper, cumin, and garlic powder.
Heat cast iron skillet to medium high heat and drizzle oil once temperature has been reached. Place chicken into skillet and cook through (roughly 5 minutes per side). Squeeze juice from lime onto chicken when halfway cooked.
Remove from heat and tent with foil. Allow to rest.
In a food processor, add 2 peeled/pitted avocados, cilantro, lime juice, greek yogurt, garlic, salt, pepper, and cumin. Blend until smooth and creamy.
Serve chicken with a side of your choice and drizzle with avocado lime sauce. Top with freshly cracked pepper and a dash of chopped cilantro.
Enjoy!