On half of the tortilla, add the shallots, spinach, and chicken before folding it in half.
Brush oil onto a skillet on medium heat and place the quesadillas into it. Let cook for 1-2 minutes or until the bottom has browned to your liking. Lightly brush the top side of the quesadilla before flipping it over and letting it cook again for 1-2 minutes.
Repeat for as many quesadillas as you’d like.
When done, cut into three or four pieces and serve.