Sprinkle evenly with 1 teaspoon salt and 1 teaspoon pepper.
Arrange thyme sprigs on hot charcoal or hot lava rocks on grill. Coat food rack with vegetable cooking spray; place on grill over high heat (400 to 500).
Place fish on rack, and grill 5 to 6 minutes on each side or until fish flakes with a fork.
Melt butter in a saucepan over medium-high heat; add almonds, and saute 5 minutes or until butter is brown.
Remove from heat. Stir in orange rind.
Pour sauce over fish.
Garnish, if desired.
* Orange thyme may be substituted for thyme sprigs