Heat the oil in a large skillet over medium-high heat. Add the ground meat, salt, and black pepper. Cook, breaking up the meat with the edge of a spoon until it is cooked through and no longer pink, about 6 minutes. Drain the meat and set aside, keeping a small amount of fat in the bottom of the pan to sauté the veggies.
Decrease the heat to medium and add the onion, zucchini, and bell pepper. Cook, tossing, until they are crisp-tender, about 4 minutes.
Add the garlic, smoked paprika, cumin, red pepper flakes, oregano, and dill. Toss until well combined and the spices toast a bit, 1 to 2 minutes. Add the ground meat back into the skillet and toss until well combined. Stir in the lemon juice and remove from the heat.
Ladle into bowls over prepared brown rice or baby arugula, if desired. Top with crumbed feta and more dill to garnish. Serve and enjoy!