Preheat your air fryer to 400°F.
Cut the potato into thin wedges and toss them in a bowl with 1 teaspoon of olive oil, half of the sea salt, and the paprika.
Place the potato wedges in the air fryer basket and cook for 12-15 minutes, shaking the basket halfway through until they are golden and crisp.
While the potatoes are cooking, pat the cod fillets completely dry with paper towels and season with the remaining salt, black pepper, and garlic powder.
In a shallow bowl, whisk together the almond flour, arrowroot powder, and light beer until a smooth, thick batter forms.
Lightly grease the air fryer basket with the remaining teaspoon of olive oil.
Dip each cod fillet into the beer batter, allowing the excess to drip off, and carefully place them in the air fryer.
Lower the temperature to 375°F and cook the fish for 10-12 minutes until the coating is bubbly and the fish flakes easily with a fork.