Preheat oven to 350, and grease a 9x13 baking dish with oil or cooking spray.
To a large bowl, add chicken, half the can of diced green chilis, ¼ the shredded cheddar, softened cream cheese, salt, pepper, and cilantro to a bowl. Combine.
In a medium deep walled pan, add olive oil and heat over medium heat. Add onion and jalapeño, and season with salt and pepper, Cook, stirring occasionally, until softened, 5 minutes.
Add garlic and stir. Cook until just fragrant, 30 seconds.
Add remaining diced green chilis, salsa, and chicken stock to the pan, and stir to combine. Bring to a boil over high heat, then reduce to medium heat. Cook 3-6 minutes, until slightly thickened, then add lime juice and stir.
Coat each tortilla in sauce, fill with chicken filling (careful not to overfill to prevent breaking), roll, and place seam side down in baking dish.
Repeat until all tortillas are filled.
Top with remaining sauce, and remaining shredded cheddar.
Bake for 30-40 minutes, until cheese is melted.
Serve with sour cream, jalapeños, scallions, cilantro, avocado and lime.