In a small bowl, whisk together olive oil, butter, lemon juice, steak seasoning and garlic.
Grill chicken over medium high heat for 3 - 4 minutes. Turn chicken and brush on marinade and continue to cook. Turn chicken and coat with remaining marinade and grill until done. Total cooking time - approximately 6 minutes per side. Remove chicken from grill, lightly cover with foil to rest for 5 minutes.
HELPFUL TIPS:1) I slightly pound my chicken so that it cooks evenly.2) After cooking, season with additional salt and/or Montreal Steak Seasoning.3) Squeeze over lemon for added flavor.