Preheat your oven to 220°C (430°F) and line a baking sheet with parchment paper or a silicone mat for easy cleanup.
Cut a medium head of cauliflower into small, bite-sized florets, about 2.5 cm (1 inch) each, then rinse and pat dry thoroughly to remove excess moisture.
In a large mixing bowl, toss the cauliflower florets with olive oil until each piece is lightly coated; this helps them crisp up in the oven.
In a small bowl, combine the breadcrumbs, smoked paprika, garlic powder, and salt, mixing well to distribute the spices evenly.
Add the dry spice mixture to the cauliflower and toss again until all pieces are coated evenly with the seasoned crumbs.
Spread the coated cauliflower florets out in a single layer on the prepared baking sheet, leaving space between each piece for even roasting.
Bake in the preheated oven for 20 minutes, then flip or toss the cauliflower using tongs or a spatula to promote even crisping.
Return the cauliflower to the oven and bake for another 10-12 minutes, until the edges turn golden brown and crispy.
Remove the cauliflower from the oven and immediately squeeze fresh lemon juice over the hot bites, then toss gently to coat and brighten the flavors.
Allow the bites to rest for a few minutes on the baking sheet to crisp up further, then serve immediately with your favorite dipping sauce or enjoy on their own.