In a medium bowl, combine the ground beef, egg, almond flour, sea salt, black pepper, and smoked paprika.
Mix gently by hand until just combined, then roll into 1-inch meatballs.
Heat the olive oil in a large skillet over medium-high heat and sear the meatballs until browned on all sides, about 5-6 minutes.
Remove the meatballs from the skillet and set aside; in the same pan, add the diced onion and sliced zucchini, sautéing until softened.
Stir in the minced garlic, tomato puree, and chipotle in adobo sauce, bringing the mixture to a gentle simmer.
Return the meatballs to the skillet, cover, and cook for an additional 8-10 minutes until the beef is cooked through and the sauce has thickened.
Serve the meatballs and zucchini hot, spooning the extra smoky sauce over the top.