Preheat grill to medium.
Combine brown sugar and cinnamon in a small bowl; set aside.
Cut each banana in half; slice horizontally making four pieces.
Brush cut sides of banana very lightly with oil; sprinkle with cinnamon sugar. Brush one side of pineapple ring very lightly with oil; sprinkle with cinnamon sugar. Place oiled sides of fruit on grill.
Sprinkle tops of fruit with cinnamon sugar. Grill 2 to 3 minutes until fruit is nicely browned and slightly soft. Turn; sprinkle with remaining cinnamon sugar. Grill an additional 1 to 2 minutes. Remove fruit from grill.
Portion 2 banana pieces and 1 slice of pineapple into dessert bowls. Add 1/2 cup of frozen yogurt to each bowl. Top with fresh strawberries, a drizzle of chocolate sauce and whipped topping and almonds if desired.
Tip: Clean grill grates thoroughly before grilling fruit.
Recipe Note: For best results use firm bananas.