Preheat the oven to 200°C (400°F).

In a mixing bowl, toss the sliced mushrooms with olive oil, chili powder, cumin, paprika, garlic powder, salt, and black pepper.

Spread the seasoned mushrooms in a single layer on a baking sheet and bake for 15-20 minutes, or until tender and slightly crispy.

Warm the tortillas in the oven or on a skillet.

To assemble, fill each tortilla with the roasted mushrooms, fresh salsa, and avocado slices.

Garnish with fresh cilantro and serve with lime wedges on the side.