1 tablespoon olive oil
Nonstick cooking spray
1 1/2 cups crushed tortilla chips, divided
1 pound ground beef
One 1.25-ounce packet taco seasoning mix, or homemade Taco Seasoning, recipe follows
1 cup prepared salsa
1 cup sour cream
1 avocado, halved, peeled, pitted, and cubed
1 cup grated extra-sharp Cheddar (4 ounces)
1 tablespoon chili powder
2 teaspoons onion powder
1 teaspoon ground cumin
1 teaspoon garlic powder
1 teaspoon paprika
1 teaspoon dried oregano
1 teaspoon sugar
1/2 teaspoon salt