Chocolate Orange Cheesecake - Ohio Eggs

Ingredients

• 1 ½ cups chocolate graham cracker crumbs or crème-filled chocolate sandwich cookie crumbs
• 1 ¼ cups sugar, divided
• 1/4 cup all-purpose flour, divided
• 1/4 cup real butter, melted
• 3 (8-ounce) packages cream cheese, softened
• 4 eggs
• 1 ½ teaspoons grated orange peel
• 1 teaspoon vanilla extract
• 1/3 cup orange marmalade, melted
• 1/4 cup semi-sweet chocolate chips
• 1/2 teaspoon shortening