Pre-heat oven to 400°F. Line baking sheet pan with parchment paper or foil.
In a bowl, combine oil, Worcestershire sauce, dried herbs, garlic powder, and onion powder. Whisk ingredients together.
Lay cauliflower on prepared baking sheet pan in a single layer. Brush the marinade on both sides of the cauliflower slices. Sprinkle salt and pepper to top of cauliflower.
Bake for 15 minutes, then gently flip the cauliflower over. Continue baking for another 5-10 minutes or until cauliflower is tender.
Remove pan from oven and lay sardines over the cauliflower. Lightly break up the sardines on the cauliflower. Drizzle the sauce from the sardine can over the cauliflower and sardines.
Return pan to oven and continue baking for about 5 minutes or until sardines are warm.
Serve the cauliflower and sardines with Parmesan, minced parsley and lemon wedges.
Season with additional salt and pepper to taste, if desired.
