Mini Pineapple Shrimp Tostadas

Name: Mini Pineapple Shrimp Tostadas
Ingredients: 2 tablespoons salted butter; 2 tablespoons olive oil; 1 pound 30/40-count shrimp, peeled and deveined; 1 tablespoon chili powder; 1 tablespoon ground cumin; 1 teaspoon kosher salt; 1 teaspoon freshly ground black pepper; 1 lime, juiced; 2 small ripe avocados; 1 lime, zested and juiced; 1/4 cup chopped fresh cilantro; Jalapeño hot sauce, to taste; Kosher salt and freshly ground black pepper; One 20-ounce can pineapple rings; 1 tablespoon chile lime seasoning; One 18-ounce bag round tortilla chips; 1/3 cup chopped fresh cilantro; Lime wedges