Heat 2 tsp oil in a large skillet set over medium-high heat. Add onion and bell pepper and saute 3-4 minutes, until golden and tender. Add garlic and saute 30 seconds, until fragrant.

Add in tomato sauce, chicken broth, salsa, cumin, paprika, cayenne, salt and pepper to taste. Bring to a low boil, then reduce heat and simmer for 5-6 minutes, stirring frequently until sauce has thickened and reduced by half. Taste and adjust seasonings, if necessary. Stir in sour cream, chicken, and corn; mix well and remove from heat, then allow to cool slightly.

Spread a heaping ¼ cup refried beans onto the center of each tortilla, then top with ½ cup of the chicken mixture. Flatten the filling into rectangle shape with the back of a spoon, then top with 3 tablespoons shredded cheese. Fold the bottom of the tortilla snugly over the filling, then fold in the sides. Roll the chimichanga up to the top edge, forming a tight cylinder, and secure the ends with wooden toothpicks. Repeat with the remaining ingredients.

Fill a pot or heavy skillet with about 1-inch of cooking oil and heat over medium-high heat to 365 degrees F. Place two chimichangas flap side down in the hot oil and cook 1-2 minutes of each side until golden brown.

Remove and drain on paper towels, and remove toothpicks. Repeat frying with remaining chimichangas.

Serve warm topped with sour cream, avocado, salsa, cilantro, cotija cheese and/or queso sauce.