Make Cookie Crust (Optional): Mix chocolate cookie crumbs with melted butter until resembling wet sand. Press evenly into bottom of 9-inch springform pan. Bake at 350°F (175°C) for 10 minutes. Cool completely.
Bake Red Velvet Layers: Preheat oven to 350°F (175°C). Grease and line two 9-inch round pans. Whisk together flour, cocoa powder, baking soda, baking powder, and salt. In separate bowl, blend sugar, oil, eggs, buttermilk, vinegar, vanilla, and red food coloring. Combine wet into dry ingredients, mixing just until smooth. Divide between pans and bake 25-30 minutes until toothpick comes out clean. Cool completely.
Make Cheesecake Layer: Beat softened cream cheese and sugar until smooth. Add eggs one at a time, beating well after each. Mix in vanilla and sour cream. Pour over cooled crust or into lined pan. Bake at 325°F (160°C) for 40-45 minutes until edges set but center slightly jiggles. Cool completely and refrigerate at least 4 hours.
Make Cream Cheese Frosting: Beat cream cheese and butter until smooth, about 3 minutes. Add powdered sugar one cup at a time, mixing on low. Add vanilla and beat on medium-high for 2 minutes until light and fluffy.
Assemble Cake: Place one red velvet layer on serving plate. Spread 1 cup frosting on top. Add chilled cheesecake layer. Spread another cup frosting on cheesecake. Top with second red velvet layer. Apply thin crumb coat over entire cake. Refrigerate 30 minutes. Apply final thick coat of frosting, smoothing sides and top.
Add Glaze and Decorate: Warm jam, water, and lemon juice over low heat until pourable. Cool slightly, then pour over top center of cake, allowing drips down sides. Pipe decorative frosting borders. Sprinkle with red velvet crumbs and chocolate chips. Refrigerate at least 1 hour before serving.