In a shallow dish, combine potato flakes, seasoned salt, and pepper.

Dip catfish fillets in beaten egg, then coat well with seasoned potato mixture.

Place in a large nonstick skillet coated generously with cooking spray, and cook over medium heat until fillets are golden, about 10 minutes.

Spray remaining uncooked side of fillets with cooking spray, turn over, and continue cooking until golden and fish flakes easily with a fork (about 10 more minutes).

Turn only once during cooking.