Step 1

Mix olive oil, soy sauce, lemon juice, liquid smoke, mustard, pepper, and garlic powder together in a large glass or ceramic bowl.

Step 2

Place chicken in the bowl turn to coat with marinade. Cover and marinate in the refrigerator for 1 to 4 hours. Do not marinate longer than 4 hours.

Step 3

Preheat an outdoor grill for high heat and lightly oil the grate.

Step 4

Remove chicken from the marinade and shake off excess. Discard the remaining marinade.

Step 5

Cook chicken on the preheated grill until no longer pink in the center and the juices run clear, 6 to 8 minutes per side. An instant-read thermometer inserted into the center should read at least 165 degrees F (74 degrees C).