Add all adobo chicken ingredients to a small (2-3 quart) slow cooker
Cover and cook on high for 3-4 hours or low for 6-8
Shred chicken
In saucepan melt butter and whisk in flour until smooth
Add in broth slowly while continuing to whisk until combined
Let simmer while whisking until slightly thickened (about 3-4 minutes)
Remove from heat and stir in sour cream and lemon juice (add a pinch of salt if desired)
Preheat oven to 350 degrees
Assemble adding a small ladle of sauce to bottom of small casserole dish (I used a 5x8 dish)
Divide chicken among 6-8 tortilla and roll and place seam side down in dish
Pour remaining sauce over top and sprinkle with cheese
Bake for 15-20 minutes until cheese is melted and lightly browned
Let set for about 15 minutes before serving
Top with fresh cilantro, if desired