Sweet and crunchy hazelnuts team up with bright lemon and fresh parsley to add oomph to the tilapia for an easy seafood recipe. Serve this atop a salad or alongside brown rice or orzo.
Preheat oven to 450 degrees F. Line a large rimmed baking sheet with foil; brush with 1 Tbsp. oil. Bring fish to room temperature by letting it stand on the counter for 15 minutes.
Meanwhile, stir together hazelnuts, parsley, shallot, lemon zest, 1 tsp. oil, 1/8 tsp. salt, and 1/8 tsp. pepper in a small bowl.
Pat both sides of the fish dry with a paper towel. Place the fish on the prepared baking sheet. Brush both sides of the fish with lemon juice and the remaining 2 tsp. oil. Season both sides evenly with the remaining 1/4 tsp. salt and 1/8 tsp. pepper. Divide the hazelnut mixture evenly among the tops of the fillets and pat gently to adhere.
Roast the fish until it is opaque, firm, and just beginning to flake, 7 to 10 minutes. Serve immediately.