Step 1Heat the oven to 350 degrees.
Step 2In a small skillet heated over medium heat, toast the fennel seeds just until they are fragrant, about 2 minutes, shaking the pan frequently. Remove from heat and place the seeds in a medium bowl.
Step 3Add the olive oil, honey, vinegar, salt, pepper and lemon juice to the bowl and whisk to combine. Stir in the lemon slices, fennel slices and fronds, apples and tarragon. Cover and refrigerate overnight.
Step 4Make the frico: Line a baking sheet with parchment paper and grease the paper with a thin coat of olive oil. Make 4 evenly spaced mounds of cheese, using about 3 tablespoons of the cheese for each. Spread the cheese with your fingers to make 4-inch rounds, making sure the cheese is evenly spread and there is at least 1 to 2 inches between rounds. Bake until the cheese is golden brown, about 8 minutes. Remove from heat and gently loosen the frico from the parchment. Gently place the frico on a rack to cool.
Step 5Divide the fennel-apple slaw among four plates and top each with a frico. Serve immediately.