If using frozen cauliflower rice, remove it from the freezer to begin thawing while you prepare other ingredients.
Heat 2 tsp olive oil in a medium frying pan over medium-high heat. Add the ground beef, season with salt and some fresh-ground black pepper, and cook until well browned, breaking the meat apart with a turner or potato masher as it cooks.
When the beef is browned, add Spike Seasoning, Kalyn’s Taco Seasoning, Pace Picante Sauce, 1/2 cup water, and the diced green Anaheim chiles (if using). Simmer until most of the liquid has evaporated.
While the meat simmers, drain and halve the black olives, dice the avocado and toss with 1 T lime juice, and dice the cherry tomatoes. Grate cheese and set extra salsa or sour cream out if desired.
Remove seeds from the Poblano, finely dice it, and slice the green onions.
Heat the remaining 2 tsp olive oil in a large non-stick frying pan over medium-high heat. If seasoning the oil, add peeled garlic cloves and cook briefly until fragrant, then remove the garlic.
Add the diced Poblano to the hot oil and cook 2–3 minutes until it begins to soften.
Add the frozen cauliflower rice and cook, stirring frequently, for 3–5 minutes until heated through and any excess liquid has evaporated; reduce heat if needed. Turn off the heat and stir in the sliced green onions.
To serve, divide the cauliflower rice into four bowls, top each with one-quarter of the meat mixture, then add grated cheese, halved black olives, diced avocado, and diced tomatoes.
Serve immediately with additional salsa and sour cream at the table if desired.