Creating the flavorful Spicy Chicken Avocado Brioche is straightforward if you follow these easy steps:

1. Marinate Chicken: In a bowl, combine olive oil, smoked paprika, cayenne pepper, garlic powder, salt, and black pepper. Add chicken breasts and coat well. Let it marinate for at least 10 minutes.
2. Cook Chicken: Heat a grill pan or skillet over medium-high heat. Add the marinated chicken breasts and cook for about 6-7 minutes on each side, or until cooked through and juices run clear. Remove from heat and let it rest.
3. Prepare Avocado: While the chicken cooks, halve and pit the avocados. Scoop the flesh into a bowl. Mash it gently with lime juice, making sure to leave some chunks for texture.
4. Toast Brioche Buns: Split the brioche buns in half. In the same skillet, add the cut sides down and toast until golden brown. This should take about 2-3 minutes.
5. Assemble Sandwich: Start by spreading a generous layer of mashed avocado on the bottom half of each brioche bun. Slice the cooked chicken and place it over the avocado.
6. Add Garnish: If desired, top with sliced jalapeños and fresh cilantro for an extra kick and fresh flavor.
7. Complete the Sandwich: Place the top half of the brioche bun on the sandwich to complete it.
8. Serve Immediately: Enjoy your creation while the brioche is still warm and the chicken hot.

This step-by-step guide will help you create an incredible dish that will amaze your taste buds.