Stir together first 4 ingredients. Stir in rice, if desired. Place 1/3 cup mixture just below center of each tortilla. Fold opposite sides of tortillas over filling, forming rectangles; secure with picks.
Pour oil into a large skillet; heat to 325°. Fry, in batches, 4 to 5 minutes on each side or until lightly browned. Drain on paper towels. Remove picks; arrange on lettuce. Serve with toppings and Hominy Ole, if desired.
Note: To serve 4 or 6, double all ingredients, and process as directed. To bake, place on a baking sheet, and coat both sides with cooking spray. Bake at 425º for 8 minutes; turn chimichangas, and bake 5 more minutes. Remove picks.