@Becky1951. This. A little is better than too much. The green leaf seasons can be used heavily or sparingly without detriment. Add salt last and after cooking.
Tilapia- lightly season (no salt) with green herbs (tarragon, basil, dill, paprika sweet or smoked, sage,
onion powder, garlic, etc), ground pepper, lemon juice. Just before cooking, lightly oil. Pan fry medium or bake ( Tilapia will be fairly quick with thin fillets). Scallion and garlic sauted just before cooking fish. Seasoned Breading may be used. Cook carefully. A slight under cook is better than over cook. Because tilapia is a fresh water, bottom feeder, there is definite earthy flavor that you may mask with the seasonings.
Cod fillets are thicker and will take a longer bast and cooking. I don't use any breading since the flesh is deliciously tender and mild. Cook carefully and know that a thick fillet will cook even when off the heat.
Season similarly. Add salt sparingly at serving. Lemon juice adds to the flavor profile at then tail end of cooking.
Sometimes I used bottled salad dressing (any) in a light bast and skip everything else. Cook normally.