In a large mixing bowl, whisk together the olive oil, lemon juice, lemon zest, minced garlic, chopped dill, sea salt, black pepper, and smoked paprika (if using) until the marinade is well blended.
Submerge the chicken breasts in the marinade, ensuring each piece is thoroughly coated. Cover the bowl tightly with plastic wrap or transfer the chicken and marinade to a resealable plastic bag. Place in the refrigerator to marinate for at least 30 minutes, but aim for 2-4 hours.
Preheat your grill or a non-stick skillet over medium-high heat. If using a grill, lightly oil the grates to prevent sticking.
Take the chicken out of the marinade and let any excess marinade drip off. Save the remaining marinade for later use in basting.
Place the chicken on the heated grill or skillet. Cook each side for approximately 6-7 minutes or until the internal temperature of the chicken reaches 165°F (75°C) and you see beautiful grill marks forming.
In the final two minutes of cooking, brush a bit of the reserved marinade over the chicken to enhance its flavor profile.
Once fully cooked, remove the chicken from the heat and allow it to rest on a cutting board for about 5 minutes.
Slice the chicken and serve it alongside a fresh, crisp salad or perfectly steamed vegetables.
Notes
Arrange the sliced chicken on a platter, garnished with lemon wedges and sprigs of fresh dill for an attractive presentation.