I like to make the dressing at least an hour ahead to let the flavors develop. Combine all of the ingredients for your dressing in a bowl & whisk until smooth & completely combined. Taste & adjust seasonings. You can add a little water if it's too thick (start with a Tbsp). Place in the refrigerator until ready to use.
If making your own croutons, do this now (see notes for instructions)
Bring pot of salted water to a boil & have large bowl filled with ice cubes & cold water ready (ice bath). Plunge beans into boiling water wait 2 1/2 minutes. Drain beans in a colander, run cold water over, & place in ice bath. Once beans are completely cool lay them out on a double thickness of paper towels or a clean dish towel & roll them up. Place in the refrigerator until ready to use.
If steaming eggs, do this now (see notes for instructions)
Season salmon with Old Bay, kosher salt & cracked pepper to your preference, set aside & let salmon come to room temp about 20 minutes.
While salmon sits, gather your remaining ingredients. Slice your tomatoes, & avocados. Peel & quarter your eggs. Get your salad greens ready.
To cook salmon: Set oven to 325 f & put a Tbsp each of olive & avocado oil in an oven proof skillet (stainless or cast iron). Heat your oil in the skillet just until it shimmers over moderate heat. Lay your salmon, skin side up, in the oil. You want the oil hot enough to sizzle nicely, but not so hot that it burns. leave the salmon alone for 3-4 minutes.
After 3-4 minutes slide a thin metal spatula under the fish to see if it lifts easily. If it gives a lot of resistance wait a little longer & check again in a minute. The top should be nice & golden & it should release easily. Flip your fish over & place entire skillet in the oven.
Cook 8-10 minutes, depending on the size of your fillet & how long you seared it. Check at 8 minutes with an instant read thermometer. It should read 120 when it's ready to take out. Residual cooking should increase the temperature to 125. If you're squeamish about salmon being a little pink take it out at 125 & let it rise to 130.
While salmon cooks arrange greens on individual bowls or plates. Arrange tomatoes, green beans, eggs, olives, avocados on top leaving a space for your salmon. Drizzle with a little bit of the dressing.
When salmon is done slide spatula between the skin & the flesh & place on top of salad. Sprinkle croutons and cheese around salmon & drizzle with a little more dressing. Crack some pepper over all.