Turn your oven to 200C (400F). Tear kale into bite sized pieces, discarding the stems if they are thicker than 1/2cm (1/4in). Spread kale over a large flat baking sheet / tray. Drizzle over a little olive oil and toss to coat.
Place the fish on top of the kale. Sprinkle over the almond meal, making sure you make a nice crust on the top of the fish. Season with salt and bake for 10 minutes.
While the fish is cooking, combine mayo and yoghurt in a small bowl. Season with salt as needed.
When the 10 minutes is up, check the fish and kale. If the fish is cooked through, remove it from the oven. If not, keep cooking for a few more minutes.
When the fish is cooked and the kale is crispy in some places, divide fish and kale between two plates. Drizzle over sauce and enjoy asap.