Using a food processor or rolling pin, crush the Doritos so that they are a texture coarse like bread crumbs. Set aside in a large bowl.
Mix the flour and salt in one bowl and eggs in another. Whisk the eggs so that they are well scrambled well.
Spray a baking sheet with cooking spray.
Set up the four bowls in order: 1. bowl with the chicken 2. bowl with the flour and salt 3. bowl with the beaten eggs 4. bowl with the crushed Doritos.
Lift out a few chicken strips and place them in the flour so they are all coated. Lift the chicken strips out of the flour and shake off any excess. Place them in the eggs and turn them so they are evenly coated. Lift them out of the egg and then place them in the crushed Doritos - again so they are even coated. Place the coated chicken strips on the baking sheet. Repeat with the remaining chicken strips.