Heat a large nonstick skillet over medium heat. On one half of a tortilla, layer some provolone, then a layer of beef, then some roasted peppers. Fold in half to cover the lling. Repeat to make 3 more quesadillas. 2. Add 1 tablespoon olive oil to the skillet. Add 2 quesadillas and cook until golden on the outside and gooey in the middle, 4 to 6 minutes per side. Slide out of the pan and sprinkle lightly with garlic salt. Repeat with the remaining 2 quesadillas. Cut into wedges and serve with giardiniera relish.