Chicken with Pepper Jack and Roasted Peppers Panini

whole boneless (skinless chicken breasts)

paprika

kosher salt

freshly ground black pepper

garlic powder

whole red bell peppers (roasted with olive oil)

mayonnaise

Dijon mustard

whole slices pepper jack cheese

several handfuls of baby spinach

slices crusty bread like Ciabatta

extra virgin olive oil