Step 1
In a bowl, mix olive oil, garlic, dried oregano, and a pinch of salt and pepper.
Step 2
Add the chicken breasts to the marinade, ensuring they are well coated.
Step 3
Heat a frying pan over medium-high heat and cook the chicken for 4-6 minutes per side until cooked through.
Step 4
Remove from the pan and let them rest for a few minutes before slicing.
Step 5
At the same time boil the potatoes in salted water until they are fork-tender. Drain and let them cool slightly.
Step 6
In a large bowl, mix the pesto, mayonnaise, Dijon mustard, salt, and pepper.
Step 7
Add the potatoes, chicken, red onion and celery to the bowl and gently toss until everything is well coated with the pesto mixture.
Step 8
Serve garnished with basil leaves.
