Cook chicken breasts in a frying pan until tender and no longer pink, about 10-12 minutes. Let them rest for a few minutes before chopping.
In a mixing bowl, combine refried beans, chopped chicken, cheese, salsa, cumin, oregano, chili powder, and green onions. Mix well until combined.
Place about 1/2 cup of chicken mixture in the center of each tortilla and fold the opposite sides over the filling, rolling it up like a burrito.
For baked chimichangas: Preheat the oven to 400°F (200°C). Lightly brush with oil and bake for 25 minutes until golden and crispy.
For pan-fried chimichangas: Heat a skillet over medium heat, add oil, and place chimichangas seam side down. Turn every 20-30 seconds until golden, about 5-7 minutes.
Serve warm, topped with salsa, sour cream, and guacamole. Enjoy with a side of authentic Mexican rice!
Notes
For a vegetarian option, substitute the chicken with black beans or grilled vegetables.