01 -
In a medium bowl, combine olive oil, Dijon mustard, lemon juice, soy sauce, minced garlic, paprika, onion powder, dried thyme, salt, and black pepper until thoroughly mixed.
02 -
Place chicken breasts in a resealable plastic bag or shallow dish and pour the marinade over them. Ensure the chicken is evenly coated. Cover and refrigerate for at least 20 minutes, or up to 2 hours for deeper flavor.
03 -
Preheat an outdoor grill or grill pan to medium-high heat, allowing the grates to heat for several minutes.
04 -
Remove chicken from the marinade, discarding excess liquid. Grill chicken breasts for 6 to 8 minutes per side, turning once, until well-browned and fully cooked with an internal temperature of 165°F.
05 -
Transfer chicken to a clean plate and let rest for 5 minutes before slicing or serving.