Preheat oven to 350ºF. Scatter the almonds, sesame seeds, and pumpkin seeds on a baking sheet and bake for 6 minutes. Remove from the oven and cool.
In a large bowl, combine the beets, herbs, red chili flakes, and lemon zest. Stir together the cooled seeds and nuts with the lemon juice, olive oil, salt, and some freshly ground black pepper. Taste. If you need it, add a little bit of honey to the dressing.
Toss the beet and herb mixture with the seeds and dressing. Taste. Season with salt and pepper if necessary and serve.