Grill chicken - chop & set aside.
Chop spinach, chipotles & jalapeno & place in LARGE deep skillet
Add in garlic, butter & seasonings & saute for about 5 minutes so that everything gets soft.
Add in milk & half & half & bring to a simmer - do not boil
Add in tomatoes, both kinds of cheese & chicken & continue to simmer so all flavors come together - stirring occasionally
While this is simmering- cook your pasta to package directions
Remove pasta from heat - drain rinse
Remove sauce from heat.
Serve immediately & top pasta with sauce & added cheese