Easy Chicken Flautas

Name: Easy Chicken Flautas
Ingredients: 0.25 cup butter; 0.25 cup all-purpose flour; 0.25 cup minced onion; 0.25 cup chopped black olives; 2 tablespoons lemon juice; 1 tablespoon oil; 0.25 teaspoon ground paprika; 0.125 teaspoon ground black pepper; 0.125 teaspoon salt; 1.5 cups cooked shredded chicken; oil for frying, or as needed; 8 flour tortillas; toothpicks