Heat oven grill to high. Place chiles on a baking sheet; grill, turning as needed, until charred and tender, 4-5 minutes.
Transfer to a bowl and cover with plastic wrap; let sit 5 minutes.
Discard stems, skin, and seeds from chiles; finely chop and transfer to a bowl.
Add cherries, coriander, walnuts, oil, molasses, juice, salt, and pepper; toss to combine.
Serve chilled or at room temperature.
Notes
You can make pomegranate molasses by reducing 2 cups of cranberry juice over a medium heat until around 1/2 cup remains - It will thicken more on standing, so don't over reduce.