Cook the Filling:
Heat 1 tablespoon avocado oil in a skillet over medium heat.
Add diced onion and sauté until softened.
Stir in shredded chicken, chili powder, cumin, paprika, salt, and pepper. Cook for 2-3 minutes until well combined.
Mix in Salsa and Cheese:
Transfer the chicken mixture to a bowl.
Add salsa verde, shredded Monterey Jack cheese, and Oaxaca cheese. Stir until the cheese begins to melt.
Add fresh lime juice and mix well.
Assemble the Chimichangas:
Lay a flour tortilla flat. Spread ¼ cup refried beans in the center.
Add about ¼ of the chicken and cheese mixture.
Fold in the sides of the tortilla, then roll up tightly.
Pan-Fry the Chimichangas:
Heat a thin layer of avocado oil in a skillet over medium heat.
Place each chimichanga seam-side down and cook for 2-3 minutes per side, turning as needed, until all sides are golden and crispy.
Add more oil if necessary between batches.
Serve:
Serve hot with guacamole, sour cream, salsa, and fresh cilantro.