Spicy Lentil Tacos

Name: Spicy Lentil Tacos
Prep time: 15 min
Cook time: 10 min
Total time: 25 min
Cuisine: Mexican
Ingredients: 1 tablespoon avocado oil; 1/4 large red onion (diced); 1 bell pepper (diced); 1 serrano pepper (diced); 1 chipotle pepper in adobo (diced); 1 tablespoon adobo sauce (from the chipotle can); 1 teaspoon garlic powder; 1 teaspoon onion powder; 1 teaspoon chili powder; 1 teaspoon smoked paprika; 1 teaspoon cumin; 1/2 teaspoon pepper; 1/2 teaspoon salt (plus more to taste); 2.5 cups cooked lentils (see notes); 2 avocados (cubed); 1 serrano pepper (sliced); 1/2 bunch cilantro (chopped); 1 lime (juiced); salt (to taste); 8 taco-sized tortillas (flour or corn); 1/2 small head cabbage (shredded); lime wedges (for serving)