Preheat the oven to 400°F and line a baking sheet with parchment paper. Spray the parchment lightly with avocado oil cooking spray.
Steam or microwave the cauliflower florets until just tender, about 5 to 6 minutes. Let them cool slightly, then transfer to a clean kitchen towel. Wring out as much water as possible. This step is critical for crispy tots.
Finely chop the squeezed cauliflower and place it in a large bowl. Add the cheddar, almond flour, egg, crumbled bacon, chives, garlic powder, onion powder, salt, and black pepper. Mix thoroughly until a cohesive mixture forms.
Scoop out roughly one tablespoon of the mixture at a time and shape each portion into a small oval or cylinder, packing it tightly. Place each tot on the prepared baking sheet.
Spray the tops of the tots lightly with avocado oil cooking spray. Bake for 20 to 25 minutes, flipping them over gently at the halfway point.
Continue baking until the tots are golden and crispy on the outside. Let them cool on the baking sheet for 5 minutes before serving. They firm up perfectly as they rest. Serve with sour cream on the side.