Season the chicken breast evenly with half of the sea salt and black pepper.
Heat 0.5 tbsp of olive oil in a skillet over medium-high heat and sear the chicken for 6-7 minutes per side until golden brown and cooked through.
While the chicken rests, roughly chop the fresh parsley, mint, cucumber, and cherry tomatoes.
In a large mixing bowl, whisk together the remaining 0.5 tbsp of olive oil, lemon juice, and the remaining salt and pepper to create the dressing.
Add the mixed greens, chopped herbs, cucumber, and cherry tomatoes to the bowl and toss thoroughly until every leaf is coated.
Slice the warm chicken breast into thin strips and arrange them over the salad base.
Top the salad with the sliced avocado and serve immediately while the chicken is still warm.