Prepare the Pecan Coating: Combine chopped pecans, panko breadcrumbs, paprika, garlic powder, salt, and pepper in a shallow bowl. Mix thoroughly.
Dredge the Grouper: Pat the fillets dry. Lightly coat each fillet in flour, dip in beaten eggs, then press into the pecan mixture until fully coated.
Heat the Pan: In a large skillet, melt butter with olive oil over medium heat until hot.
Cook the Fillets: Place fillets in the skillet. Cook 4–5 minutes per side, until the crust is golden brown and the fish flakes easily. Avoid overcrowding.
Serve: Transfer to a plate lined with paper towels. Garnish with parsley and serve with lemon wedges.