We really dislike having to repeatedly look up various basic cooking times / temperatures / principles. Here are some ones we use a lot. These are meant to be simple baselines; test and revise as appropriate.

Chicken

Boneless breasts: bake at 350F for or 30-35 minutes are 450F for 15-18 minutes.

Drumsticks: bake at 450F for 25 minutes

Thighs: bake at 425F for 35 minutes

Fish

Baked salmon: bake at 425F for 20 minutes (for roughly inch-thick fillets)

Skillet salmon: coat salmon in olive oil, pan sear over medium-high heat for 3-5 minutes skin-side down, then flip and finish cooking to desired doneness.