If brining, combine sea salt, honey, and warm water in a large stainless steel or glass bowl to make the brine.
Submerge the chicken in the brine, cover, and refrigerate for 3-4 hours.
Remove the chicken from the brine and thoroughly pat dry with paper towels.
Arrange the chicken pieces skin side up in a large baking dish.
Mix olive oil and minced garlic in a small bowl and coat the chicken with this mixture.
Sprinkle red pepper flakes and Celtic sea salt over the chicken.
Allow the chicken to rest at room temperature for 30 minutes.
Prep the fresh herbs and slice the lemon into wedges during the resting period.
Set the oven rack to the middle position and preheat the broiler on high.
Place lemon wedges beside the chicken in the baking dish.
Broil the chicken skin side up for 5-10 minutes until the skin crisps, watching carefully to prevent burning.
Take the chicken out and sprinkle half of the chopped herbs, add cherry tomatoes if using.
Reduce oven temperature to 400°F and switch from broil to bake.
Return the chicken to the oven, baking for 25-35 minutes until thighs reach 175°F or breasts reach 165°F.
If desired, broil briefly at the end to brown the skin further.
Let the chicken rest in the pan for 10 minutes and sprinkle remaining herbs on top.
Transfer chicken to serving plates or a platter.
Pour the pan juices and roasted tomatoes into a small bowl, stir, and serve alongside the chicken for extra flavor.