Combine lemon juice, olive oil, garlic, dill, salt and pepper in a small bowl. Use the back of a small spoon to press garlic and dill into other ingredients. (This releases more flavor from the dill and garlic). Add marinade to a resealable plastic bag or small rimmed dish then add chicken. Marinate 20 to 30 minutes at room temperature or up to 2 hours in the refrigerator.Brush extra garlic from chicken and pat dry.Heat 1 to 2 tablespoons of olive oil in a medium frying pan (with lid) over medium-high heat. As soon as the oil is hot and looks shimmery, add chicken. Cook 2 to 3 minutes until golden.Flip, reduce heat to low then cover with lid. Cook 10 to 15 minutes or until an instant read thermometer reads 165 degrees F (74C) when inserted into the thickest part of the breast.Transfer chicken to a plate then cover loosely with aluminum foil. Rest 5 to 10 minutes then serve with salad.Whisk lemon juice, olive oil, mustard, honey and dill in a medium bowl then add tomatoes, cucumber and feta cheese.Toss gently, season to taste then refrigerate at least 20 minutes and up to a day.