In a medium mixing bowl, combine softened cream cheese, shredded cheddar, chopped green onions, and diced red bell pepper. Blend until smooth and creamy, then season with salt, black pepper, and optional garlic powder or paprika.

Lay out half of the Ritz crackers on a clean surface, with the salted side down. Scoop approximately 1 teaspoon of the filling onto each cracker and spread evenly.

Take the remaining Ritz crackers and press them on top of the filled crackers, salted side up, applying gentle pressure to adhere the filling.

Refrigerate the assembled sandwiches for 20-30 minutes to allow flavors to meld and firm up the filling.

Once chilled, arrange the Ritz Cracker Party Sandwiches on a platter and serve immediately or keep refrigerated until ready to serve.