Preheat your air fryer to 400°F (200°C).
In a shallow dish, combine the almond flour, grated parmesan cheese, garlic powder, 0.125 tsp sea salt, and 0.125 tsp black pepper.
Pat the tilapia fillets completely dry with paper towels, then press each side into the almond flour mixture until evenly coated.
Lightly brush or spray the coated fillets with avocado oil to ensure a golden finish.
Place the tilapia in the air fryer basket in a single layer and cook for 8-10 minutes, flipping halfway through, until the fish flakes easily with a fork.
While the fish cooks, toss the asparagus spears with olive oil and the remaining salt and pepper, then roast in the air fryer during the last 5 minutes or in a separate pan until tender-crisp.
In a small bowl, whisk together the Greek yogurt, chopped fresh dill, lemon juice, and Dijon mustard to create the sauce.
Serve the crispy tilapia fillets over a bed of warm quinoa with the roasted asparagus on the side and a generous dollop of lemon-dill sauce.