Preheat oven to 350 degrees F.
In a small bowl, combine goat cheese, tarragon, fennel, lemon zest, and pepper; set aside.
Brush olive oil over both sides of the bread slices. Arrange bread in single layer on large baking sheet. Bake approximately 5 minutes per side or until bread is just crisp. Remove from oven.
NOTE: Cheese mixture and toasts can be made 2 days ahead. Cover cheese mixture and chill. Cool toasts; store airtight at room temperature.
When ready to serve, spread goat cheese mixture over the top of the prepared toasts. Top with salmon slices, trimming to fit. Garnish with optional garnishes that you desire. Arrange on platter and serve.
Optional Garnishes: lemon peel strips, tarragon sprigs, sour cream, and/or salmon roe
Smoked Salmon Crostini Recipe: https://whatscookingamerica.net/appetizers/smsalmoncrostini.htm