Preheat the oven to 400°F (200°C) and line a baking sheet with parchment paper.
Whisk together the Dijon mustard and honey.
Brush the mustard-honey mixture evenly over the top of each salmon fillet.
In a small bowl, combine the mixed seeds with the chopped dill or parsley.
Press the seed mixture firmly onto the mustard-coated tops of the fillets so it sticks.
Season with salt and pepper, place on the prepared baking sheet, and bake for 12-15 minutes, until the salmon is cooked through and the seed crust is lightly toasted.