Preheat the oven to 450ºF. Line a baking sheet with parchment paper.
Arrange the cubed potatoes on the baking sheet in a single layer. Drizzle with a light coating of avocado or olive oil (about 1-2 Tbsp). Transfer to the oven and roast for 20 minutes.
Meanwhile, make the sauce by combining the honey, garlic, Dijon, oil, and spices in a bowl until smooth.
When the potatoes have finished, move them to the sides of the baking sheet and add the salmon to the center, skin side down. Pour the sauce over top of the salmon, spreading it evenly over the top to coat.
Bake for an additional 10 minutes, then turn on the broiler for a few more minutes to caramelize the top.
Finish with extra salt & pepper plus chopped parsley to your taste.