Cook the sausages for 1-2 minutes at medium heat, on each flat side- enough to brown and firm slightly
Slice the sausages 1/4" thick, or the same thickness of your veg, then return to pan and brown each side- 1-2 mins per side and remove, leaving any oils in the pan
add the onions to the pan, season with salt and saute 5-6 mins until browned and soft
add the peppers and spices, add extra oil if necessary and toss to fully coat everything in the spices
return sausage to the pan and continue to cook another 3-5 minutes, then remove and set aside
Turn heat to medium-high, lay down 1 tortilla, cover evenly with 1/3 cup shredded cheese, pile peppers, onions, sausage and 1/4 of the pico onto half the quesadilla, fold the other half over the ingredients, press to flatten and continue to fry until bottom is dark brown and crisp, 1-2 minutes. Flip and cook another 1-2 minutes until other side is dark brown and crisp.
Serve optionally garnished with more cilantro and sides of sour cream and guacamole