In a large ziptop bag, combine 4 tsp. sea salt, 1/2 cup olive oil, balsamic vinegar, Italian seasoning, garlic powder, and black pepper.
Place the chicken in the ziptop bag, close the bag, and use your hands to massage the chicken into the marinade. Place the bag in the fridge and let marinade for a few hours or even overnight.
When you’re ready to make dinner, preheat the oven to 425 degrees.
Cover an extra large sheet pan with foil, take the chicken out of the fridge and spread the chicken thighs on the pan.
Empty both bags of frozen green beans in a large bowl and drizzle with 1/4 cup olive oil plus 2 tsp. salt. Use your hands or a spoon to stir it around.
Add the green beans around the chicken on the pan (it’s OK if some of the beans cover the chicken a little), and place the pan in the oven.
Bake for 30-35 minutes, or at least until the chicken reaches an internal temperature of 165 degrees.
Serve immediately and enjoy!