In a small bowl, combine the cayenne, thyme, paprika, garlic powder, kosher salt, pepper and panko. Stir until well combined.
In a separate bowl, combine egg with 1 tsp water and whisk until well combined.
Heat the olive oil in a large nonstick skillet over medium heat.
While the pan is heating, individually dip the salmon into egg wash and shake off excess. Next, roll the salmon into the panko mixture until evenly coated. Gently place into the hot pan and cook until the salmon is cooked through and golden brown on each side, 2-3 minutes per side.
Transfer cooked salmon to a paper towel-lined plate.