Cover with foil and carefully transfer to the oven.
Roast the chicken for 30 minutes, and then remove the foil and return to the oven and continue cooking until the internal temperature reaches 160 degrees F, 30 to 40 more minutes.
The Victorinox Swiss Flame and its cousin the Camp Flame are both Swiss Army knives built around a butane lighter.
Even without any gas in it, it weighs 141 grams - around five ounces.
So it's certainly pocketable, but you're unlikely to forget you're carrying it.
This size and weight is what you expect from a stacked everything-but-the-kitchen-sink Swiss Army knife, but the -Flame models don't have that many tools; they're made around 10mm (0.4 inches) wider, and considerably heavier, than they'd otherwise be by the lighter in the middle. None of your yellow-flame disposable nonsense; a proper air-mixed high-temperature wind-resistant blue flame, which you ignite by pulling back a protective cover on the end of the knife with your thumb.
Toast the coriander seeds, mustard seeds, peppercorns, cumin and bay leaf in a dry pan until fragrant and the mustard seeds begin to pop, about 1 minute. Scatter the orange zest on top of the chicken and place the orange pieces in the cavity.
Transfer to a spice grinder or small food processor and grind into a fine powder. Lift the chicken skin from the chicken without removing it using your fingers.Rub the spice mixture and the salt on top of the chicken and under the skin.Pour the beer into the bottom of the roasting pan, not onto the chicken or any of the vegetables.That turns on the gas and clicks the piezoelectric igniter.The end of the lighter doesn't get particularly hot (with normal use, anyway), the gas outlet is protected from pocket fluff and other crud by the cover when it's not in use, and there's a window in the side through which you can see how much liquid butane (or 2-methyl-propane, as I've explained before) remains.You can see the window to the right of this picture, and you can also see the combination filler valve and flame power selector.