I've never been a big fan of chicken thighs but I accidentally stumbled across a recipe that called for cooking them skin side up at 400F and damn they come out good. All I do is put salt on all sides and let them cook until the skin is crispy (about 20-25 minutes). The fat renders out and over the thigh while the skin gets really crispy
I save the fat for future use and keep the pan full of fond in the fridge and eventually deglaze when sautéing onions in it for some other purpose (+ add chicken stock, wine, etc depending upon what I'm making)
simple as hell but very tasty