Heat a large skillet over medium-high heat and add olive oil. Season chicken with salt and pepper. Sizzle until browned on all sides and cooked through. About 6–8 minutes. No drama, just steady heat.
In a small bowl, whisk honey, pepper jelly or flakes, soy sauce, and Dijon mustard until smooth. If you like it sweeter, add a touch more honey; if you like it zingy, splash in a little more mustard.
Toss the cooked chicken in the sauce, then fold in the diced pimentos. Stir until everything is glossy and coated. Let it simmer for 2–3 minutes so the flavors kiss each other nicely.
Taste and adjust. If it tastes flat, a pinch more salt or a splash of soy sauce. If it’s too sweet, a tiny squeeze of lime juice can wake it up.
Remove from heat and garnish with sesame seeds or green onions if you’re feeling fancy. Serve hot, with a napkin—you’ll thank me later.