Preheat oven to 450 °F / 230 °C
Mix sauce ingredients together in a bowl.
Heat an oven-safe sauté pan (I like these nonstick pans since they're oven safe) over high heat. Add the chips and about 60 g (¼ cup) of sauce — use just enough to lightly coat the chips.
Add half the cheese and toss to combine. Scatter the remaining cheese on top without tossing, then transfer the pan to the oven for 4 minutes, until the cheese is melted and bubbly.
While the chips are in the oven, fry the egg — a runny yolk works best here so it mingles with the sauce.
Pull the pan from the oven and immediately top with sliced avocado, the fried egg, and a drizzle of crema.
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