Peel outer layer of fennel bulb off and slice bulb thinly lengthwise. Set aside 1-2 tablespoons of the fennel fronds for the dressing.
Pre-heat oven to 400F. Add sliced fennel to baking sheet with a drizzle of olive oil and bake for about 10 minutes. Set aside.
Next, make the dressing. Add garlic, salt, pepper, mint, fennel fronds, oil, vinegar, honey and citrus to blender. Blend until smooth. Set aside.
Thinly slice zucchini lengthwise to make ribbons. This is easiest with a mandolin slicer, but can also be done by hand.
Toss zucchini ribbons with half of the citrus dressing in a large bowl and let marinate for 5-10 minutes.
On your plate, arrange roasted fennel, zucchini ribbons, mixed greens, sliced avocado, and tomatoes.
Top with remaining citrus dressing and any extra herbs. Pairs well with fish and seafood.