Possible Clues:

• Frito-Lay product
• Frito-Lay snack
• Snack introduced in 1948
• Puffy snack brand
• Snack notable for its residue
• Puff-snack brand
• They stain your fingers orange
• Frito-Lay snacks with a Flamin' Hot variety
• Brand whose mascot, Chester, is a very fast cat