Heat the oven to 450°. Place the salmon fillets on a parchment paper- or foil-lined baking sheet. Brush or spoon the olive oil and mustard onto the salmon.
In a small bowl, mix together the coconut flour, parsley, rosemary, thyme, sea salt and pepper. Sprinkle the herb mix over the salmon and rub in. Place in the oven for 10 to 15 minutes, until the salmon is cooked to the desired doneness.
While the salmon is cooking, heat the coconut oil in a pan over medium heat. Toss in the greens and add a splash of water and salt and pepper, to taste. Cook on medium-low, covered, for about 8 minutes. Serve the greens on the side or under the salmon.